I have an LG Optimus T. Not the most ground breaking phone ever, but a heck of a deal for the money. Nonetheless, it's my phone, and I'm not really happy with the internal memory barrier I'm facing. For what it's worth, I have it rooted. I heard a way to partition your SD card (with part of it being allocated to ext3 file system) and re-flashing your phone somehow so the phone utilizes your ext3 partition on the SD card for housing applications. I heard several users in the IRC chat confirm this works well.
However, now that it's show time and I'm trying to do it, I'm a little confused. So please, be gentle, and I apologize if I'm re-hashing simple steps. I'm just trying to make sure I get what I'm supposed to do.
I'm working from this link here:
http://forum.xda-developers.com/showpost.php?p=10692249&postcount=1299
So from what I understand, the factory ROM can do fine, so I don't need to locate a custom ROM. That said, I just need to reset the phone to factory settings (thereby getting the factory ROM), run A2SD (is A2SD any different from A2SD Killer that they speak of in this post? I never heard of it), then go through the motions of the initial setup as it suggests (language choice, time zone, etc).
Then, prior to setting up my gmail account, I'm supposed to reboot to recovery. What does it mean reboot to recovery? Am I supposed to hold down the keys to do a factory reset? Is that what they mean by recovery?
I hate to ask these questions in a form of hand holding, but I just want to make sure I'm doing it right. After re-hashing this post several times and talking to 2 buddies about it without any further progress, I figured I'd just ask.
That said, can anyone help guide me in the proper direction? I'd greatly appreciate it.
Thanks!
make sure that you are looking at the right forum next time that link was for htc desire (use it only if it says its compatible for your phone)
before you start worrying about a2sd, you need a custom recovery, found here. once you flash recovery and boot into it, everything will be clear (ext, partition, flashing, etc)
for apps2sd, id suggest using ungazes data2sd (apps2sd and data2sd are basically the same thing, at least thats my understanding)
follow the steps there. if anythings unclear, post any questions and ill check back later
I did notice it was an HTC forum, but I was speaking with users who had other devices and claimed they used the same method, so I didn't think much of it. At that point I figured it was more of an Android thing vs an actual manufacturer thing.
When you speak of the custom recovery, what *exactly* does that entail? I was told Android phones have the hard factory reset that cannot be altered as long as you don't mess with /system under root terminal. That said, this phone is pretty much brand new. I have nothing on it that isn't already stored in the cloud somewhere (google contacts, gmail, work's email, etc).
What I'm trying to get at is, is a custom recovery needed only to get my phone back the way it was before I screwed with it? Or if I'm accepting to doing a hard factory reset, is that acceptable as well?
Thank you very much for the link. This seems a little more straight forward than the last one was. I'm also trying to understand the differences between handsets and Android versions here. For example, you mentioned the previous post was for HTC. It's a difficult thing for me to grasp because I come from a very heavy Linux background. If I mess with Ubuntu on one machine, then mess with Ubuntu on a top end server, then tinker with it on a laptop, it's still Ubuntu no matter what machine it's on. So it's hard for me to grasp the concept of Android acting differently on different machines (phones) and having different methods to different devices.
That said, it sounds like the link you posted to me is more of a generic "everything should work" type of scenario. After all, it's just moving /data. It would make sense that it would work that way, right? If not, please correct me, as I'd rather be wrong 1,000 times over again and be corrected than make 1 mistake and mislead someone or brick my phone.
Thanks for your response. Hopefully the recovery thing isn't too much of a hassle and I hope this ext thing can do the trick! What kind of difficulty is involved here? Is this fix, say, grandma approved? Or is that asking for a lot?
EDIT - Also, I noticed you spoke of Apps2SD. I have that installed... is that not acceptable to what I'm running? After all, it just seems to move what parts of the apps it can to the SD card. I was aiming to have the entire application base MOVED to the SD card. Is that what it does and I'm just a little confused??
i understand what you mean (how ubuntu on one machine is the same as ubuntu on another)
its the same thing with android EXCEPT that each android device is made different by the hardware (i.e. my phone is limited by the fact that its cpu is not powerful enough to run some apps; different components make up each device in contrast to lets say iphone, where each iphone is the same; my understanding is that each rom utilizes and has commands for each of these components so if they're different then youll need a rom unique for each device)
heres a general scope over recovery:
custom recovery - allows you to flash a rom, make/restore a nand backup, well it allows you to do a lot of things
stock recovery - only a hard reset (done automatically)
a hard reset wont cut it if you screw up your phone. youll need a custom recovery (which allows you to back up your entire system as a nand backup)
when you say apps2sd, i think you are talking about moving the app to the sd card in settings. thats not true apps2sd. true apps2sd moves the whole app to the sd card, giving you unlimited space to store apps (well actually you are only limited by your sd card)
if i missed anything, tell me. im multitasking right now (sorry)
Hahah, no you're doing quite well for multitasking! I understand what you mean, and it makes sense to me. I mean, after all, isn't it still the same analogy to Ubuntu? (at first I didn't think so, but now I think it may be more relevant) After all, if I'm running a dual proc 6 core system with 24gb of RAM, it'll certainly move Google Earth (aka, an app) faster than a Pentium 3 with 128mb of RAM would, even though they're both packin Ubuntu, Fedora, Debian, or whatever your flavor may be. So in theory, I suppose you can apply the same analogy from Ubuntu as you do Android. The catch is, Ubuntu (or any Linux distro for that matter) runs on old hardware great, so the gap between old computer vs super computer is less relevant than today's Android based smart phones, where 300mhz could mean whether or not you can run a certain app. Compared to real life, Ubuntu operates just as quick to me on my dual proc 6 core (12 core total) server with 24gb of RAM as it does my P4 1gb RAM box on my test bench.
Anyway, going back on topic a bit more... yeah I was thinking of the Apps2SD from the market. So I suppose the "real" Apps2SD is a true "mv -R" type of application (linux recursive move of data).
Okay, so get the market based App2SD out of my head. Gone. Done. Okay... the thing I'm still not understanding is the recovery. I mean, I'm looking at the hard factory reset as, say, a recovery "Ghost based" partition that some Windows computers often come with.
Example - Windows gets fubar'd. Reboot. F8. Recover system. And it dumps the recovery image on the main partition. Ta da! Just like it was when you bought it at Best Buy!
I mean, if I could get it back to factory, then I could just start over, right? Trying to put it into words as best I can... I was thinking of it like this.
Hard factory reset = Windows recovery image from Dell factory (back to day 1).
Nandroid custom reset = Own "self made" Clonezilla/Ghost image (customized with your stuff as a backup you made yourself)
That's what I was thinking. So that being said, am I absolutely positively required to do a custom backup? Can I not just rely on the hard factory reset to take me back to day 1 from when I got it from T-Mobile and (if I so desire) start the process over if I tank it? You see, I was told that it's nearly impossible for me to permanently brick an Android phone, as the hard reset, while inconvenient since it would wipe my stuff, would at least get me back to a bootable, functional ROM.
If I'm re-hashing unnecessary things and just need to focus on the fact I have no choice, by all means, e-slap me. Thanks for your help so far. I'm just trying to learn what I can! Your time is appreciated.
the thing is, a time may come when you cannot even boot your phone (lets say you were messing around and modding and all of a sudden you get stuck in a bootloop) and you try doing a factory reset but it doesnt work. this might be because something is corrupted. for android, a factory reset only wipes the data but does not restore anything. this is where custom recovery comes in handy. not only can custom recovery do a factory reset, it can restore a backup if your phone ever gets screwed up (unless you screw it up so much that you cant even access your recovery, then things get much more complicated). think of this backup as a system restore on windows (creating a restore point on windows is like creating a nand backup in custom recovery)
and dont worry about all the questions a few months back i never knew this myself so i understand
Well my friend, your patience is certainly appreciated. I understand a little better now. So let me throw out another analogy just to further solidify what little understanding I feel I have.
Factory reset = Windows restore point
Nandroid reset = Self made recovery image via Clonezilla/Ghost
Your point is a Windows restore point is only good as long as the system is solid. If your hard drive dies, suddenly your backed up restore point is useless. But... dump on that Clonezilla/Ghost image you have saved elsewhere and you're good to go.
That said, how should I get started? How do I make a Nand backup? Any guides you recommend? Will this back up my current apps, settings, etc?
Once done, how would I go about the actual Apps2SD method for making the SD card act as app storage? I assume it's that ungazes link you provided earlier?
Again, thanks for your help!
Figure this is where I should come in to help. You can install Amon_ra's recovery or clockworkmod onto your device (you can choose if there is both) but you should be able to do all that from a backup and restore menu in the custom recovery. You can go get the free version of rom manager and it should be able to install clock work recovery all without that much input from you, then you boot into recovery from rom manager. It shows you this simple yet amazing GUI that you never thought possible with something so small such as your android device. You are then given choices, do you want to flash a zip to mod your system such as custom roms, new keyboards, etc. Backup and restore (nandroid backup) or even mount it in USB mode which is useful if you never backed up, and didn't keep a copy of a custom rom on your SD card. (I never made that mistake of atleast the latter option. lol) So basically, the recovery is the "safemode" of android, only you don't get to access all of your stuff until you leave "safe mode"
and a bit of advice: NEVER flash anything without 50% or more battery.
It probably will atleast softbrick your device if it dies mid-flash.
oh, I see. Yeah I thought recovery was the actual PROCESS of pulling an old backup over, not so much operating in a sterile system environment such as safe mode.
About flashing, I would suspect it would best be done plugged in with AC power. I've had a laptop or two nearly die on me in my flashing days (went to the bathroom, came back, flashing red light, uh oh!) so I think I'll be good there.
So which applications do I need to get started? The problem I face is when I google something, there's no less than 600 ways to do all sorts of various tasks. So I have a hard time separating which one is best practice, which one is the old method, which one is definitely a bad idea, etc. So you say I can choose which ROM to use. Are they pre-built into whatever recovery software I need to use to get this job done? Or do I have to download them somewhere and put them on my SD card and then boot into recovery?
EDIT - hey how about this lil guy here?
http://code.google.com/p/android-roms/wiki/SPL
Came across it when I was googling for Nandroid Backup.
EDIT 2 - Or this guy. Looks to be the same step as the Nandroid step within the first link. Looks like the first link, while a bit more dated, is also a bit more thorough.
http://theunlockr.com/2010/02/06/how-to-backup-and-restore-your-android-phone/
Since you're rooted, you can run thiss https://market.android.com/details?id=com.koushikdutta.rommanager&hl=en and it will be able to install clocwork mod recovery. Then you just boot into it and whatever rom you want to use (found in the android development forum for your device) you install that zip from SD card and voila! You're golden with a new rom on your phone. It isn't completely needed though. lol
if i were you, i wouldnt use rom manager (it is known to cause problems). for now, use the recovery i posted in the second post. if you want to flash a rom, heres a list of most (if not all) roms for our phone.
as you start getting familiar things, you should start referring here
heres a general scope of things when it comes to flashing a custom rom:
1. boot into recovery
2. make a nand backup
3. you MUST wipe data/factory reset, cache, and dalvik cache. wiping the sd card is not necessary
4. flash the rom
5. boot normally (first boot can take awhile)
and remember, never flash more than one file without rebooting normally in between or else you might run into some problems
When you say wipe the dalvik, cache, etc, is that done during a factory wipe or do I need to do that in a separate step?
Edit- which rom would you suggest? I hear a lot about cm7. Thats the only one I recognize.
they are separate processes but they are found under the same category
so itll be like this:
wipe
wipe data/factory reset
wipe cache
wipe dalvik cache
wipe rotation settings
wipe battery stats
something like that (at least this is how it works for amonra recovery. for clockwordmod recovery, i believe they are categorized differently but its still the same idea)
Ahh, I gotcha. I remember reading instructions on clearing the dalvik-cache, so that's why I thought maybe I'd have to re-hash those links I found and do that in a separate step. But it sounds pretty streamlined!
Well, I'll give this a shot tonight. I'm still going back and forth on which ROM to use. I hear a lot about CM7, but I also heard of 1 or 2 users saying on CM7 they lost their Google Navigation or Google Latitude functionality, both things I utilize. I also had no idea the Opt T was supported on CM7. But then again, if it's anything like Linux distros, using one of the more popular ROMs has its benefits as those are normally the highest supported.
People weren't lying when they said stop googling and just go to XDA forums. Thanks for the help yet again, bro.
im using cm7 and both google navigation and latitude work for me. and i know that the link i gave you said optimus p500 roms, but all p500 roms work for the p509 (since they both use the same hardware). just remember not to flash any roms from any other forums, flash only from the p500 forum
glad i could help. if you need any more help, just refer to that forum or pm me (since i have the same phone as you)
Sweetnsour, I was just suggesting Rom manager to be able to flash clockwork, then he could flash amon_ra from inside clockwork. I think that's possible? It was more of a hint for a newer user. I remember being on the other side and since I don't personally own your device, I was just offering general android advice. Glad to see you corrected me though, anyway, good luck OP. Hope you enjoy your device modifications.
I come here with my tail between my legs ducking from any backlash I may get from any users here. I spent the better part of the evening Googling around, asking in IRC, and trying to get this part working.
I ran into several issues. Some of them are quite comical to me.
I Googled around, as well as utilized the links that were provided to me in this thread. I learned that Clockwork and Rom Manager are from the same dev team, but they are two separate products. Likewise, I was hearing other users confirm that Clockwork is the bees knees but that Rom Manager is kind of "ehh" with predictability and reliability.
After I ran into some road blocks I ended up asking in the IRC Android chat room. Some users in there directed me to some guides. I read through them. Of course, each one was different. So to a user like me, I have no idea which one is the better one to go with. The one guide kept talking about how I need to run a .sh script. So, of course, I download the files supplied and extract them. No .sh script. I ask in the IRC chat and I caught hell because I should read the directions more clearly. I read through them several times and got no where. Ultimately, some users in the IRC chat decided to link me to the guide they recommended. Later, I too ran into a road block there.
Moving along, I went into the XDA-Devs chat once I found myself at the next road block. There some users spoke to me about what I was trying to do. I linked to them the guides the Android users told me to use and they were wondering why I was using such old guides to do this simple task.
This is where my frustration is brewing. There are a million and one ways to do everything. There's no structure. No consistency at all. I've done a ton of reading and I still feel like I know next to nothing about doing a "simple" recovery. I know phones are different. I know ROMs are different. But holy hell. Doing "xyz" task on one Android phone vs the same task on another Android phone is as different from driving a lawnmower vs a dump truck.
At this point I installed Android SDK on my Ubuntu machine. However, "adb shell" was yielding a command not found error. It's nearly 2 am. I'm packing it up for tonight.
That said, let's back up a bit here. My goal is this. I have an LG Optimus T. I have it rooted. I would like to utilize Clockwork in order to do a recovery as Clockwork came heavily recommended by many sources I read about. Then, I would like to utilize the XDA site for a list of available ROMs for my phone and choose one of my liking.
Is this guide, right here what I should be using to get this job done?
Along with that, how exactly do I need to install SDK on Ubuntu so it works without headache?
Thank you to everybody who has been patient with helping me learn this stuff so far.
that guide works. after you flash the recovery from that guide, don't think that you are always stuck with it. you can always flash another recovery in recovery. as for sdk, do you need it to flash recovery? those commands to flash recovery can be done on the phone using a terminal emulator. (about installing sdk on ubuntu, I will check on that tmrw because I'm doing this on my phone, and over where I'm at I should be sleeping)
EDIT: and here's a list of roms for our phone http://forum.xda-developers.com/showthread.php?p=16535249
EDIT: for sdk, have you tried this?
http://forum.xda-developers.com/showthread.php?p=11823740#post11823740
Sent from my LG-P500 using XDA Premium App
Okay. I wasn't sure if it was safe to run those commands from the phone. I was tempted to but, ahh, figured I'd wait.
Now these instructions are exclusive to the Clockwork mod, correct? So if I get any other recovery (Amon Ra, for example) there will be specific instructions for that exact recovery too as well, right?
I'll give this a shot later and see where I end up. Thanks for your help!
Edit... It's a shame those commands aren't in an sh script already. Just a fun idea... What I'd add them to a blank text file and on the phone just chmod +x it and run it. Would that work??
the commands are fairly similar:
cwm (from your guide):
#mount -o remount,rw -t yaffs2 /dev/block/mtdblock5 /system
#cat /sdcard/flash_image > /system/bin/flash_image
#chmod 755 /system/bin/flash_image
#mount -o remount,ro -t yaffs2 /dev/block/mtdblock5 /system
#flash_image recovery /sdcard/recovery.img
#reboot recovery
amonra (from here):
# mount -o remount,rw -t yaffs2 /dev/block/mtdblock1 /system
# cat /sdcard/flash_image > /system/bin/flash_image
# chmod 755 /system/bin/flash_image
# mv /system/etc/install-recovery.sh /system/etc/install-recovery.sh.bak
# mount -o remount,ro -t yaffs2 /dev/block/mtdblock1 /system
# flash_image recovery /sdcard/recovery-RA-GNM-thunderg-1.1.0.img
# reboot recovery
after you flash either cwm or amonra, you wont have to do this again when you flash another recovery. to flash another recovery, you would just have to flash the recovery zip in recovery. these zips can be found here
[FAQ] [REF]★ All you need to know about Android | Read this before you post/root ! ★
Understanding the Android world before rooting your LG Nexus 5
Here is a *noob friendly* collection of information every user that wants to root their phone should know. Many people blindly follow guides without even knowing what "Rooting" means. Hopefully, this will help new users (and old ones, why not?) understand what is happening with their phone, and what they will put up with.
This may seem as a lot to read, but there are no shortcuts. You either read and learn what you're dealing with, or find out the hard way.
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Contents
Post 1:
★What does rooting mean?
★The advantages of rooting
★The disadvantages of rooting
★What about the internal memory? How does that work?
★Things you hear people talk about
★How to backup your stuff
★Flashing a custom ROM
★ADB and Fastboot
★Restoring your Nexus 5 to STOCK
Post 2:
★Tips and Tricks
★Questions and Misconceptions
Let's get started, shall we?
What does rooting mean?
To 'root' your phone means to gain administrative rights on the file system of your phone (in linux, root is the username of the master admin, kind of being an Administrator on Windows). With root access, you can install and uninstall anything you want on the phone. Android is, in fact, based on Linux.
Most phones come with limited access regarding what you can and can't do on it. This isn't necessarily a bad thing, because it can keep users from accidentally breaking something they shouldn't mess with on the phone, especially in regards to the operating system. However, many manufacturers limit your rights to things that aren't really so mission critical, too, and rooting the phone gets around this.
If you have a few unnecessary applications (bloatware) pre-installed on your phone that you cannot uninstall, rooting will give you this ability. It will also allow you to upgrade to newer versions of Android before your phone's manufacturer and/or cell provider make the updates available to you.
So now you know what rooting means. And I bet you are now thinking "Should I do it, or not?" Well, hope this helps you decide:
The advantages of rooting
-De-bloat your phone. Uninstall any unwanted system apps.
-More control over how the CPU acts. This can increase performance or battery life, depends on how you configure it.
-More control over power consumption. This implies undervolting your CPU, giving it less power, so it consumes less.
-More control over how apps start up. Prevent apps from starting up when they don't need to.
-Change your Baseband (Radio). Try different radio versions, with the purpose of reducing battery drain or improving your signal strength.
-Flash custom ROMs. Bored of the stock ROM and look? Browse through the hundreds of custom ROMs provided by this community, each having different features and looks.
-Backups. The ability to completely backup your phone, and fully restoring it to the time of the backup. This is done with a Nandroid Backup (we'll talk about this later)
-Mods and Inovations. Use many mods, fixes, tweaks or features created by the community!
-Custom Kernels. As a Nexus device, the Nexus 5 will have tons of kernels with different features, supporting better performance, or battery life! To see what a kernel is, keep reading.
-Run apps that need Root Permission. These apps can be very useful, like Titanium Backup, Root Explorer, Terminal Emulator and many others!
The disadvantages of rooting
-Rooting will void your warranty (Although reverting root is very easy)
-The process a bit dangerous. Something could (99.9% probably not, but still) go wrong, and end up bricking your phone. So, yes, the process is 0.1% risky. You can end up deleting everything on your phone. You'll have to handle this process gently and with care.
-You will be able to do a lot more mistakes. These may cause damage to your phone (But hey, that's why we have these kind of threads, eh?)
-No more over the air official updates. You'll have to update your phone manually, through your recovery. (Which isn't that hard)
Now that you fully know what rooting implies, let's continue exploring the Android world.
What about the internal memory? How does that work?
Now, as you might already know, each phone has an internal memory. In the Nexus 5's case, it's either 16GB or 32GB. This internal memory needs to hold a lot of things, not only your personal data. This is why you only have available to use 12.9 GB or 28 GB.
An Android's internal memory is partitioned into many chunks that have their separate purposes.
These are all the Nexus 5's partitions, and their names.
Code:
/dev/block/platform/msm_sdcc.1/by-name/system /system
/dev/block/platform/msm_sdcc.1/by-name/userdata /data
/dev/block/platform/msm_sdcc.1/by-name/cache /cache
/dev/block/platform/msm_sdcc.1/by-name/persist /persist
/dev/block/platform/msm_sdcc.1/by-name/modem /firmware
/dev/block/platform/msm_sdcc.1/by-name/boot /boot
/dev/block/platform/msm_sdcc.1/by-name/recovery /recovery
/dev/block/platform/msm_sdcc.1/by-name/misc /misc
/dev/block/platform/msm_sdcc.1/by-name/modem /radio
/dev/block/platform/msm_sdcc.1/by-name/sbl1 /sbl1
/dev/block/platform/msm_sdcc.1/by-name/tz /tz
/dev/block/platform/msm_sdcc.1/by-name/rpm /rpm
/dev/block/platform/msm_sdcc.1/by-name/sdi /sdi
/dev/block/platform/msm_sdcc.1/by-name/aboot /aboot
/dev/block/platform/msm_sdcc.1/by-name/imgdata /imgdata
Yes, there are quite a lot. You, as a user, don't need to care about all of them. Here are the ones you will need to know about:
/system- size: about 0.5GB
This partition holds the Android OS itself. Kind of like the C:// disk on your every day Windows PC. This partition has many folders and files you cannot normally get to, due to safety reasons. For example, system/app is where all the system apps are installed.
If something gets deleted from this partition, Android will most probably won't work properly.
/data- size: either 12.9GB, or 28GB
This is where all your personal data is kept. This includes apps, sms, contacts, e-mails etc. It also stores your system settings, like wallpaper, and all those stuff you set up when you got your phone. The most important folders on this partition are data/app (where your apps are stored), data/data (where you app data is stored, like highscores and stuff), and data/media.
Data/media might be considered your sd-card. Yes, I know the Nexus 5 doesn't have an sd-card, but this folder works like one. When you connect your phone to your PC, this is the folder that pops up, with all your music, images, videos, and whatever else you keep on your phone.
Things are getting a bit more complicated, eh? Just bare with me. Next, I will be explaining the different terms you will be encountering throughout your Android experience.
Things you hear people talk about
Kernel
The kernel is an essential part of any Linux based operating system. It's the program that manages input and output requests of the operating system. Imagine you're at a restaurant. You give your order to a waiter. He takes it to the chef, the chef makes your food, then the waiter brings it back to you, and you enjoy it. In this case, you are the Android system, the waiter is the Kernel, and the chef is the hardware. The system gives the Kernel a request, like firing up another processor core when you play a heavy game, and the Kernel fulfills the request.
Here is an image for better understanding
Recovery
This is a secondary, mini operating system that has access to your internal memory. It contains a few commands that would normally help you recover your Android system in case of a failure, like factory resetting. You will see that, for rooting, you will need to install a custom recovery.
The stock recovery does not have the ability to write custom ROMs (I'll explain these later) on your internal memory. A custom recovery has this option, and many more.
Here are some images for you to fully understand:
Stock recovery:
Custom Recovery
You can see that the Custom Recovery has more options, including "Backup and Restore", Advanced, and Install zip from Sd-card.
You can get in Recovery by powering off your phone, then hold Power+Volume Down button until a black screen with colored text appears. Then, use the volume buttons to select 'Recovery", and then press the Power Button to select it.
Bootloader
The bootloader is the first thing that fires up when you open your phone. As the name says (Boot+Loader), this program loads the kernel, which when boots up the Android system.
The same bootloader can also boot in recovery, as explained above.
When you first get the phone, the bootloader is in a locked state. That means that you cannot use fastboot commands like "fastboot flash" or "fastboot boot". With other words, you cannot simply flash a custom recovery. Thankfully, Google gave us the option to unlock the bootloader very easily, and flash a custom recovery of our choice.
Custom ROMs
A custom ROM is a ZIP file that contains an altered version of the Android OS. There will be many custom ROMs for the Nexus 5, made by wonderful and skilled devs for the community. You can install a Custom ROM with your Custom Recovery. Custom ROMs contain the following folders and files:
META-INF- This folder holds the installation info and data. A custom recovery does not know on it's own how to install a ROM. In this folder, there's a txt file that contains a script, with the purpose of telling the recovery what to do.
System- This folder contains the stuff that will be installed on the /system partition that we talked earlier about.
boot.img- Among others, this file contains the kernel that comes with the ROM.
Dalvik Cache
Android is an open source OS, which supports many different architectures. While it's mainly used in the ARM architecture, it could run on x86. Even with in the ARM there are still some variations. Just like in x86, there are many extensions and SSE is an example of that; ARM is no different and there are some variations from one ARM CPU to another. Dalvik is basically a VM(Virtual Machine) engine, this keep the apps to be universal across many architecture. While this is good, this costs processing power. Meaning, if the apps have to run through VM everytime, they will be very slow. Dalvik cache is basically cache of those apps that's already gone through the VM thus it doesn't require to go through the VM everytime. And when an app run, it run from this version instead. Since each ROM may contain different version of app or optimization or even different kernel or Android version, using dalvik cache from different ROM can get you into trouble. Think of it like trying to run application designed for Windows XP on Windows 7 or Windows 8. It may work, it may not work, or it may even crash. Wiping the Dalvik cache will force the Android OS to optimize all the installed apps all over again.
Ok, so now, after you read all this stuff, you're probably thinking "Ok, I will never get the hang of this". Don't worry. With time, you will know all of these from reflex. And, after you got over that, and manned up again, you probably thought "Ok, let's root this damn thing!". Not quite yet. We aren't done. There are still some crucial things that you need to know. So let's continue.
How to backup your stuff
Before you do anything EVER, you'll always have to backup your stuff, even if you don't feel like it, or your dog died (in which case I'm truly sorry), but, no matter what you're about to do, always have a recent backup sitting around.
There are many ways and things you can and will probably have to backup.
1. Backup your entire phone, by creating a Nandroid Backup.
As you saw in the 'Custom Recovery" picture above, you have a "Backup and Restore" option. Here it is again:
With every occasion, it's best to use it as often as possible. It only takes about 2 minutes, but it could be a life saver.
A Nandroid will backup:
/system
/data (Except /data/media, where your "sd-card" is, because it's too large and not that important)
/cache (Yes, there is a cache partition, and it will be backed up, although not really necessary)
kernel (The kernel will be backed up too)
***Optional tip: I always keep a recent nandroid backup on my PC, in case I somehow wipe all my phone's contents, and my backup among with them. The Nandroid backup is saved at this location, which can be accessed with a root file explorer, like ES File Explorer : mnt/shell/emulated/clockworkmod/backup or sdcard/TWRP. If you want to copy it to your storage, just copy the latest backup, and then move it to your PC.
2. Your apps and data only
This can be very useful when changing ROMs. You just got bored of your ROM, and want to move to another one. The only way of taking your apps and data with you is by backing them up with an application like Titanium Backup. The backups will be saved in data/media, and will be restored using the same app with which you backup up on the new ROM.
3. Your SMS, Contacts, MMS etc.
These things can be backed up by special apps on the Play Store. Ok, contacts will be restored by Google Sync ( although not always done properly, that's why I still back them up), but SMS will not be restored. There are many free apps that back them up for you, nice an easily, for them to be restored in case of a ROM change or data loss.
4. Your storage (data/media, sd-card)
You just connect your phone to your PC, select all folders, and copy all over on your PC. This will be useful when you unlock the bootloader. A bootloader unlock will wipe all the stuff on your phone (This can be avoided, read guides). So keeping a copy of your sd-card contents on your PC isn't such a bad idea.
Now you know how to keep it safe by creating backups. I will say it again, you are never too safe! Backup when you do a modification, even if it's tiny. Now, after you've finished reading the above, you will probably attempt to root. You will use one of the guides out there ( I will link one at the end of this thread ) to install a custom recovery, and gain root access. But what to do with it? Well, you will most likely end up flashing a custom ROM.
Flashing a custom ROM
You will get bored of the stock ROM, and will decide to flash a custom ROM. But you haven't done it before, and you don't really understand the process.Before you do anything, you must:
-Make sure that the files are for your phone ! If you flash files that were made for another phone, you might end up with a brick!
-Never panic! There is always a way out! That's what backups are for!
-Read all the instructions! Every ROM thread has instructions. Read them!
{By the way, flashing = installing}
Now, let me take you through the whole flashing process. ( Use the steps in the ROM threads if instructed differently than here )
1. You will search far and wide in these forums for a custom ROM that fits your needs. Every ROM comes as a ZIP file. So when you decide on a ROM, download the zip. For copyright reasons, Google Apps (Play Store, Google Now etc) don't come included with the ROM. So you will have to download them too. They are usually linked on the ROM main thread.
Some ROMs might have addons too, so check them out, and download the ones you want.
2. You now downloaded the ROM, Google Apps, and some addons. The next step will be to put them on your sd-card. Connect your phone to your PC, and make an easy access folder, like "Root Stuffs" where you'll put all these zips.
3. Now, let the backup process begin. You first backup your apps, app data , SMS, Contacts etc., like I explained above. I recommend Titanium Backup for apps and SMS, MC Backup for contacts.
4. Now you are ready to go in recovery. Power down your phone. Then, press and hold the Power Button and the Volume Down button at the same time. You will be brought to the Bootloader Screen. Now, with the Volume Buttons, switch through the options until you find "Recovery". Then press the Power Button again.
5. Now you will be booted in your Custom Recovery. Depending on your recovery, you will have the options on your screen.
CWM Recovery:
6. You will go to the Backup and Restore menu, and select "Backup". If you made a backup before, you can select "Delete" first, and delete it, for space consumption purposes.
7. After the backup finished, you will return to the main screen. There, select 'Wipe data/ Factory Reset". This will wipe everything in /data except /media, so your sd-card will remain untouched. Don't worry, you have a Nandroid Backup!
8. After the wipe finished, you will go to "Install zip from sd-card". You'll have to navigate to the folder where you put the ROM, and select it. You'll see it will nicely install.
9. After the ROM finished installing, you will have to flash the Google Apps zip, and the mods. Install them the same way you installed the ROM itself.
10. After you have flashed everything, you can select "Reboot system now" . First boot will take longer to complete. Again, don't panic. You have a Nandoid bakcup . You will end up with the ROM booted, and you'll continue setting it up.
TWRP Recovery:
6. Go to the "Backup" menu, select "Boot", "System", and "Data", then swipe the thing on the bottom on the screen to start backing up.
7. Once you're done, use the home button to get to the main screen. Select "Wipe", and swipe the thing again to Factory Data Reset. This will wipe data, cache and dalvik cache. This will not wipe your internal storage (Music, photos, etc).
8. After the wipe finished, use the home button again to get to the main screen. From there, select the 'Install" option. You'll have to navigate to the folder where you put the ROM, and select it. Then, by using the "Add more zips" option, add the Gapps package, and and then any addons or mods, in this order. Then swipe the bottom thing to flash.
9. After you have flashed everything, you can select "Reboot" . First boot will take longer to complete. Again, don't panic. You have a Nandoid bakcup . You will end up with the ROM booted, and you'll continue setting it up.
***In case something went bad, like your phone doesn't boot for more than 10 minutes, or the animation endlessly repeats itself (Boot Loop), do the following:
11*. Hold down the Power +Volume Buttons until the phone shuts down. Then release them for a second, and immediately press them again. You will be brought to the bootloader screen. Enter recovery.
12*. In recovery, go to the "Backup and Restore" menu, and select "Restore" for CWM, or "Restore" for TWRP. Then pick the backup you did earlier, and wait for it to complete. Then, select "Reboot system now", and you should be booted back in your original ROM.
Now, let's say that after you flashed a ROM, it either did not boot, or you had some bugs with it. You will go to the thread ROM to report your problem. Here's how to not post:
"This ROM doesn't work"
You will have to be a lot more specific than that. In reporting a problem, you will have to do the following:
-Say what you did (Flashing process)
-What you flashed afterwards
-What you did to reproduce the bug
-What recovery you use
-ROM Version
-even provide a logcat <This is quite advanced> (http://forum.xda-developers.com/showthread.php?t=1726238)
You have to give as many details as possible, so the developer can sort things out.
ADB and Fastboot
ADB (Android Debug Bridge)
The Android Debugging Bridge is kind of a toolkit, that has many commands to control your Android from your PC. This is an essential part of your Android experience. With ADB, you can do many stuff that you couldn't normally do, like backup your apps, or push and pull packages from your phone.
ADB is also used by many of the useful tools out there, like toolkits, and all sort of programs that enhance your Android experience.
With ADB, you can also Logcat. Logcatting is creating a log of everything that happens on your Android phone while it's on. This is used to find the sources of bugs.
Example of ADB Commands:
Code:
adb pull /system/app/RANDOM APP = creates a copy of a system app on your PC
adb push app /system/app = Copies an app from your PC to your system partition
adb reboot bootloader/recovery = Reboots the phone in bootloader or recovery
adb logcat = Starts a logcat
Fastboot
Fastboot is also a toolkit of commands, but a bit different from ADB. While with ADB, you can do simple actions, with fastboot, you can do major ones, like flashing a whole partition, or formatting one. Fastboot is usually the preferred method to flash a recovery. Also, Fastboot usually works with .img files.
Fastboot is also a very easy method of bricking your phone. Always make sure you are flashing the right files for your phone. Furthermore, fastboot is not the preferred method for recovering your phone. It is the last resort. ADB and/or recovery is much easier and safer.
Example of Fastboot commands:
Code:
fastboot erase boot = Erases the kernel
fastboot erase recovery = Erases the recovery
fastboot flash system system.img = Flashes the System partition with an image
fastboot flash boot boot.img = Flashes kernel
fastboot flash userdata data.img = Flashes Data partition
fastboot flash recovery recovery.img = Flashes a new recovery
fastboot reboot = Reboots the phone
To use ADB and Fastboot, you must first have ADB drivers and Fastboot drivers installed. Here is a very good guide to set up these two useful things:
http://www.redmondpie.com/how-to-set-up-android-adb-and-fastboot-on-windows-tutorial/
Restoring your Nexus 5 to STOCK
I moved the whole guide here:
http://forum.xda-developers.com/showthread.php?t=2513701
Check it out.
Now please proceed to the next post
Tips and Tricks
1. Try to not use toolkits. (I'm not disregarding any toolkit dev. They did a wonderful job)
Chromium_ said:
It has been proven that every time you use a toolkit, god kills a kitten. Save the kittens.
Click to expand...
Click to collapse
Due to the fact that people are lazy in nature , toolkits have been made so that users don't struggle with rooting their phone. But there are many reasons for you to not use one:
-->you won't learn anything from using a toolkit, and, if something goes wrong, a toolkit can rarely fix your problem. It's better if you rely on your own forces.
-->you put the fate of your phone in someone else's hands. If a bit of code is wrong, then your phone could get bricked.
-->you miss out all the fun. Why buy a Nexus device if you don't want to explore the depths of the Android OS?
2. Never panic
Whenever you don't know what to do, and you're stuck, don't panic. There are many people here that can help you. Don't try doing anything blindly. Search the forums, or start a thread in the Q&As section, and we will help you.
3. Read everything carefully!!
(If you read this, post a cat picture in this thread, and you will be rewarded with a thanks from me)
I might have said it a couple of times throuout this post, but always read everything. Someone wrote something for a reason. Usually, if you read everything, and do what you are told, you are bound to be failproof.
4. Battery pull emulation
If you hold the Power Button and both Volume buttons for 10-15 seconds, the Nexus 5 will power off, as if it had its battery pulled out. Useful when you get stuck.
5. Never try to make any system modification(root or flash ROM/recovery) without having enough time and resources to troubleshoot.
While most of the time, this is relatively painless when the you follow the instruction carefully. That said, things can go wrong. So, don't just say I saw a new ROM when I woke up and I wanna try it, and you have 30 minutes before going to work. Even if it only take 5 minutes to flash the ROM, if a thing goes wrong, those 25 minutes you have left may not be enough to fix your problem and you have no phone to use that day.
When you flash something, always make sure you have about an hour of free time, and a PC with ADB and Fastboot, ready to make us of if something goes wrong.
Ok, so now you know pretty much all a normal user should know. But there are still questions that are very frequently asked that need answering. Here are some questions and answers about popular problems and misconceptions. You might encounter these problems later, so give it one more minute of your time:
Questions and Misconceptions
1. My Nexus 5 is getting very hot. Hardware problem?
Nope. There are many reasons that contribute to your phone getting hot, like
-the fact that it doesn't have any way of cooling itself
-the fact that a quad core produces more heat
-etc.
Don't worry. Everything is working as it should. For example, the Ipad gets 3 times hotter than the Nexus.
2. If I am rooted, will I receive OTA updates? (See Return to stock section)
Yes, and no.
You will be able to download the update by having installed the Stock ROM with stock kernel, though it will not be installed automatically, due to the fact that you have a custom recovery. You will need to install it manually.
3. The Nexus 5 audio quality is horrible. Why?
It isn't horrible. It's normal, but the max volume isn't as loud as on other devices. I have been a piano player for 12 years. I have quite a sensitive ear, and I can tell you that the audio quality on the Nexus is comparable with that of an Ipod. The only major difference is that, with the Ipod, you can go deaf with the max volume.
4. Which kernel/ ROM should I use?
Don't ever ask this question. What's good for others isn't necessarily good for you. You'll have to try the many kernels and ROMs yourself.
5. Google Now doesn't activate with "Ok, Google". Why?
Make sure your language is English (United States) in Settings>Language & Input.
6. My battery life is short. What should I do?
-Use a custom kernel made for battery life (like Franco)
-Use the Greenify app from the play store (https://play.google.com/store/apps/details?id=com.oasisfeng.greenify&hl=ro)
-Don't use Automatic Brightness. Set the brightness to about 35%.
7. My Baseband and IMEI are unknown. What do I do?
Flash the factory images, and then boot in the stock recovery and do a factory data reset. If it does not solve the issue, repeat. I had to do it 3 times for it to work.
8. What's the difference between "Development" and "Original Development"?
Original Development - Usually original pieces of work, based on the original AOSP source, or coded by yourself.
Development - Projects based on works from the Original Development, or that don't include actual developing (Stock rooted ROMs)
This is all for now. I hope you understand what's up with this Rooting process. If you have any questions, don't be shy to ask in this thread
If there is anything to be added to this thread, please post below
Thank you for the time you allocated to reading this! You are now smarter :good:
Good day, and Happy flashing!!!
For credits, useful links and other stuff, see the post below.
Useful links
[GUIDE] Nexus 5 - How to Unlock Bootloader, Install Custom Recovery and Root
[INDEX] Google Nexus 5 - ROMs, Kernels, MODs, Recoveries, Themes
[HELP THREAD] Nexus 5 | Ask any question
[MODEM] [EFS] Nexus 5 Flashable Modems and EFS Backup
Nexus 5 OTA Help-Desk
Credits and Thanks!!
@rootSU
For providing me a template, inspiration, and much of the info. His original thread in the S3 forums: (http://forum.xda-developers.com/showthread.php?t=2362743)
@paxChristos
For the logcat part
@efrant
For pointing out some mistakes
@someone0
For this post: http://forum.xda-developers.com/showpost.php?p=47474453&postcount=81
Very good post. Im not new to rooting but I am when it comes to Nexus Devices. Im use to rooting phones with external SD cards so I have one question.
When Im going to flash a rom or zip or whatever in custom recovery, I know I have to "Wipe data/factory reset" then "wipe calivk". I know that the data wipe is for apps, app data and system settings. My question is will it also delete pictures, music, videos and other files/file folders like that on the device?
MMontanez347 said:
Very good post. Im not new to rooting but I am when it comes to Nexus Devices. Im use to rooting phones with external SD cards so I have one question.
When Im going to flash a rom or zip or whatever in custom recovery, I know I have to "Wipe data/factory reset" then "wipe calivk". I know that the data wipe is for apps, app data and system settings. My question is will it also delete pictures, music, videos and other files/file folders like that on the device?
Click to expand...
Click to collapse
A Factory Data Reset doesn't wipe the data/media folder, where all the things that should be on the sd-card are. You can use the option with no worries.
Very informative, didn't read the whole thing though. I stop at the advantage of flashing custom ROM. In my past experience, gaining root <> able to flash custom ROM. If I understand correctly, even if you can gain root access but not able to unlock the boot-loader, getting a custom ROM would be problematic. IMO, I wouldn't list that there. Sure this maybe beyond noobie scope and doesn't pertain to Nexus 5 specifically. But I wouldn't use that as a rule of thumb. Having used the Sprint Photon 4G, I have respectfully disagree with you on that. Gaining root, mean having admin privilege for the OS not the boot-loader.
---------- Post added at 11:29 PM ---------- Previous post was at 11:12 PM ----------
MMontanez347 said:
Very good post. Im not new to rooting but I am when it comes to Nexus Devices. Im use to rooting phones with external SD cards so I have one question.
When Im going to flash a rom or zip or whatever in custom recovery, I know I have to "Wipe data/factory reset" then "wipe calivk". I know that the data wipe is for apps, app data and system settings. My question is will it also delete pictures, music, videos and other files/file folders like that on the device?
Click to expand...
Click to collapse
From what I understand of basic android OS is that the system and apps are sitting on separate partition. And so is you normal partition for data, which usually the phone shown as SD card even though it's not a separate internal SD card. The phone usually have one large pool of storage space, think of it like an SSD drive. Then it got split into many partitions for many things. It has boot sector, recovery partition(for storing recovery method, either stock, CWM or TWRP), boot partition, system partition and maybe may other system relation usage partitions. Those partition are already planed out(fixed) by the people who create the ROM for the device. And the rest of the space will be given for the user to do other thing under one partition. And this partition usually won't get wipe. If you have used any custom recovery like CWM or TWRP, there usually be an option to wipe or not wipe certain things. This is possible because all those things are stored in separate partition.
someone0 said:
Very informative, didn't read the whole thing though. I stop at the advantage of flashing custom ROM. In my past experience, gaining root <> able to flash custom ROM. If I understand correctly, even if you can gain root access but not able to unlock the boot-loader, getting a custom ROM would be problematic. IMO, I wouldn't list that there. Sure this maybe beyond noobie scope and doesn't pertain to Nexus 5 specifically. But I wouldn't use that as a rule of thumb. Having used the Sprint Photon 4G, I have respectfully disagree with you on that. Gaining root, mean having admin privilege for the OS not the boot-loader.
Click to expand...
Click to collapse
Well yeah, but from being able to flash a custom ROM to being able to get root access in your current ROM, there is only one simple step, that is installing SU binaries, and a superuser app. I just didn't want to confuse new users by changing the term used only for one small step.
I'll just adding things as I read through, while I'm not a noob by any mean, that doesn't mean I don't see thing missing out. Since sometime the author fill in the missing gap in his/her head. I know I did that a few time. As I read, I though, hmm "Understanding the Android world before rooting" that's helpful. But after I start reading, it's more like a guide to understand the rooting world of android. I understand that's not the purpose here to teach people android, hopefully not to the general XDA members audience. But I would say the headline isn't exactly saying it right. The you start throwing the term Linux. Sure I understand what it is, at least to my understanding. But, it probably wouldn't hurt to stated the first time the term linux is use that Android is a linux based OS as well. Not just saying root is an equivalent of admin in linux. If you are going to assume that the intended audiences don't know what root is, then you should assume the audience know that the same targeted audiences don't know that Android has a deep relationship with linux as well.
I would put extra emphasis on dealing with fastboot. Yes you can do a major operation w/ fastboot. That said, greater power come greater responsibility. It's much easier to brick your device w/ fastboot and less chance of unbricking from using fastboot than recovery or adb.
someone0 said:
I'll just adding things as I read through, while I'm not a noob by any mean, that doesn't mean I don't see thing missing out. Since sometime the author fill in the missing gap in his/her head. I know I did that a few time. As I read, I though, hmm "Understanding the Android world before rooting" that's helpful. But after I start reading, it's more like a guide to understand the rooting world of android. I understand that's not the purpose here to teach people android, hopefully not to the general XDA members audience. But I would say the headline isn't exactly saying it right. The you start throwing the term Linux. Sure I understand what it is, at least to my understanding. But, it probably wouldn't hurt to stated the first time the term linux is use that Android is a linux based OS as well. Not just saying root is an equivalent of admin in linux. If you are going to assume that the intended audiences don't know what root is, then you should assume the audience know that the same targeted audiences don't know that Android has a deep relationship with linux as well.
I would put extra emphasis on dealing with fastboot. Yes you can do a major operation w/ fastboot. That said, greater power come greater responsibility. It's much easier to brick your device w/ fastboot and less chance of unbricking from using fastboot than recovery or adb.
Click to expand...
Click to collapse
Made some modifications. Thanks!
Credited you
Good thing to see this in the N5 section too.
Great job,dude:good:
Well done! Not a noob, but still learned some things.
jd1639 said:
Well done! Not a noob, but still learned some things.
Click to expand...
Click to collapse
They say we never stop learning
abaaaabbbb63 said:
They say we never stop learning
Click to expand...
Click to collapse
Very true, I am 76 and learn new things all the time.
Very good and informative post.
While I knew the subject, I read the whole thing just in case I missed something.
The list of ALL the partitions was something I did not know.
:good:
Rooting may or may not void your warranty, depending on where you are. In the EU they cannot refuse warranty for a rooted device, or even a fully 'hacked' phone with unlocked bootloader, rooted and custom ROMed or even in the case of HTCs super CID'ed devices. The exception is if the fault is software related, if you brick it, you lose it, but any hardware fault is still covered.
ChrisM75 said:
Rooting may or may not void your warranty, depending on where you are. In the EU they cannot refuse warranty for a rooted device, or even a fully 'hacked' phone with unlocked bootloader, rooted and custom ROMed or even in the case of HTCs super CID'ed devices. The exception is if the fault is software related, if you brick it, you lose it, but any hardware fault is still covered.
Click to expand...
Click to collapse
Still, it does not apply to the whole EU. In countries where the Nexus 5 isn't sold through Google Play, warranty policies may differ. Retailers tend to take advantage of their monopoly over these countries and strip down the warranty coverage, and say that if you modified the software, it goes in the "Unsuitable Usage" category, and they can't do anything to it, not even hardware wise.
Trust me. Retailers know how to crook you with every occasion.
abaaaabbbb63 said:
Still, it does not apply to the whole EU. In countries where the Nexus 5 isn't sold through Google Play, warranty policies may differ. Retailers tend to take advantage of their monopoly over these countries and strip down the warranty coverage, and say that if you modified the software, it goes in the "Unsuitable Usage" category, and they can't do anything to it, not even hardware wise.
Trust me. Retailers know how to crook you with every occasion.
Click to expand...
Click to collapse
They know how to try. Force the issue and they cave in. I went as far as starting court action over this and they then gave in because they know they would lose. Know your rights and use them.
Very useful info. Thanks.
Quick question. I am coming from htc one x. I have fastboot and drivers installed for that device. Will these work for the n5 or do I need to install new specific ones?
columbo67 said:
Very useful info. Thanks.
Quick question. I am coming from htc one x. I have fastboot and drivers installed for that device. Will these work for the n5 or do I need to install new specific ones?
Click to expand...
Click to collapse
They will work for the n5 (I think.... more like 80% sure). Try and see.
I had a question about the void warranty part. Do you know if it rooting/unlocking bootloader voids the warranty in Canada? I'll be getting the Nexus 5 as my first smartphone but would still like to mess around with rooting after a while, but would Google care if I rooted/unlocked the loader? Also, can you unroot/relock the loader?
Thanks.