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How should you flash a rom and a kernel?

What are the steps should u flash a kernel right after you flash a from or should you reboot then flash the kernel thanks for your help!
Sent from my Nexus S using xda premium

Hi There,
I always flashed the kernel right after flash the rom and haven't got any issues.

For a new rom, data factory reset, format /system and format /boot then flash straight away most of the time. For an upgrade, only wipe cache and dalvik cache.
For a kernel it depends, but generally just cache and dalvik cache will be fine.

Wipe cache and Dalvik cache before flashing ROM as well. I do wipes 2 or 3 times..
Sent from my Nexus S 4G using XDA App

I always do a double wipe before flashing any new rom and do a dalvik/cache-wipe before flashing a new kernel
For that i use the attached filed. Just flash via recovery (any). Helps to do it a little bit faster like doing in manual

Tutorial for flashing/installing a kernel

Hi
I just bought my first android phone which is a Google Nexus S, and I guess flashing/installing (I never know which is the correct term to describe this action!) a kernel from XDA can give better performance or some extra features, e.g. BLN
However, I don't seem to be able to find a complete tutorial of how to flash/install a kernel, can anyone help me with this please?
Thanks in advance

First you need root.
Reboot into recovery and wipe Dalvik cache maybe twice.
Then find the kernal in your SD and install
Reboot
Sent from my Nexus S 4G using XDA App

wipe dalvik cache once. then proceed to flash kernel

http://forum.xda-developers.com/showthread.php?t=1229794
[ACS] [HOW TO] Root, Unroot, Flash Roms/Kernels/Themes, and CWM! (17 videos) 12/16/11
Sent from my Nexus S 4G using xda premium

Is this the same guy that made multiple accounts just to make it seem like his thread was very active? If so your bad.
Sent from my Nexus S 4G using XDA App. Developer of brickROM, and OP of XDA Thread of The Year 2011.

wipe dalvik cache??
Does it mean I will lose all my data please?

double Wipe

weylon said:
double Wipe
Click to expand...
Click to collapse
Does it mean I will lose all my data please?

Wiping cache does not delete your data.
Unlocking the bootloader to get a custom recovery will wipe everything.

albundy2010 said:
Wiping cache does not delete your data.
Unlocking the bootloader to get a custom recovery will wipe everything.
Click to expand...
Click to collapse
so in this case, flashing a kernel will NOT delete my data, correct? since I don need custom recovery, and I have already rooted

U dont need to wipe cache. Simply wipe delvik cash then flash your kernel on your sensation.
Sent from my MIUI.us Sensation 4G using XDA App

luckyvictor said:
so in this case, flashing a kernel will NOT delete my data, correct? since I don need custom recovery, and I have already rooted
Click to expand...
Click to collapse
You don't have a custom recovery? I suppose you could use Flash Image GUI but you're really gonna wanna get a custom recovery. Especially since you want to make a backup before you flash in case something goes awry.
*if you didn't wipe /system and /boot it is NOT A FULL WIPE*

Doesnt matter just wipe dalvik cache and ur good. Through custom recovery
Sent from my MIUI.us Sensation 4G using XDA App

clockwork recovery is the base for flashing anything.
http://forum.xda-developers.com/showthread.php?t=1007782
use this guide to install CWM(See Part 3 of the Guide)
once done just wipe dalvik cache in CWM and flash any kernel .zip file

you dont need to wipe dalvik cache, cache, or anything else. as these dont have anything to do with the kernel. you can flash kernels via recovery(in .zip form), or with fastboot/terminal emulator(in boot.img form).

[Q] How to install the newest ICS radio

I'm a bit confused on this... I never tried doing the radio by itself, the latest ones I get are usually included in recent ROMs I flashed. Is there a specific procedure I have to go through to flash these radios or are they like flashing custom OS's?
I tried searching it up, but I kept getting results for different, older phones. I don't know if there's a specific way you have to do it for the Galaxy S II.

Same as flashing a rom. Do it before u flash rom
Sent from my SAMSUNG-SGH-I727 using xda premium

Girn said:
Same as flashing a rom. Do it before u flash rom
Sent from my SAMSUNG-SGH-I727 using xda premium
Click to expand...
Click to collapse
I guess I just wipe the partition cache and the dalvik cache? It's not like a full wipe, right?

megagodx said:
I guess I just wipe the partition cache and the dalvik cache? It's not like a full wipe, right?
Click to expand...
Click to collapse
exactly.

Dirty vs Clean Flash

A dirty flash is only wiping cache and davlik then flashing your ROM....
a Clean flash is at LEAST factory reset/data wipe + wiping davlik(factory wipe takes care of /cache also)... Maybe doing a format /system also.
SO let the games begin! Which is better?! FIGHT!!
...

Brian Gove said:
A dirty flash is only wiping cache and davlik then flashing your ROM....
a Clean flash is at LEAST factory reset/data wipe + wiping davlik(factory wipe takes care of /cache also)... Maybe doing a format /system also.
SO let the games begin! Which is better?! FIGHT!!
...
Click to expand...
Click to collapse
If I switch ROM's I factory reset then wipe cache and dalvik cache. If it's a theme for example I only wipe cache and dalvik cache since the theme is suppose to be made for your ROM right?....don't see the reason to reflash the ROM as well.

Wipe data? What's that for? Is THAT why my phone won't turn on..........
Nightlies: No data wipe (yes to cache/dakvik)
New rom, even if it's the same android build: always, full wipe
Themes: No wipe at all, flash right on, right after flashing rom's. Don't like to wait for two bootups!
Sent from my SCH-I535 using xda premium

Il throw a vote to whichever works.. I usually dirty wipe.. If I have issues then clean it and try again.. With nightlies I tend to be fine dirty a lot, but even still I will do a clean every couple weeks just because..

why do so many folks wipe cache and dalvik after they wipe data? A data wipe/factory reset wipes all three, there is no need to do anything else.
I always wipe data, flash rom, then advance restore data only from a nandroid...dirty flashing in its most elegant form

So we all agree that a dirty flash is just wipe cache/dalvik cache.
Do you wipe prior to re-flashing, or afterwards? Does it matter?
Sent from my SCH-I535 using xda app-developers app

What about flashing a new, updated kernel for a rom you're currently using? What steps should be taken for that? For example, cleanrom 2.1 comes with cleankernel 1.1, but the kernel has been updated to 1.2 and is out as a seperate download. How would you update just the kernel that's made specifically for the rom you use?

xxx420 said:
What about flashing a new, updated kernel for a rom you're currently using? What steps should be taken for that? For example, cleanrom 2.1 comes with cleankernel 1.1, but the kernel has been updated to 1.2 and is out as a seperate download. How would you update just the kernel that's made specifically for the rom you use?
Click to expand...
Click to collapse
Dirty wipe
Sent from a SYNERGIZED GalaxySIII

When I dirty flash, I wipe data cache n dalvik cache. Once I flash what I wanted, I wipe those two once again n select "fix permissions" just in case
Sent from my SCH-I535 using Tapatalk 2

apet8464 said:
So we all agree that a dirty flash is just wipe cache/dalvik cache.
Click to expand...
Click to collapse
I disagree. I believe a dirty flash also wipes system. If you are 100% certain that your ROM build effectively wipes system as part of it's install routine, then you could skip this step, however I always wipe system to be safe. This works for me and I rarely need to wipe data or sd card(s).
---------- Post added at 11:01 AM ---------- Previous post was at 10:57 AM ----------
xxx420 said:
What about flashing a new, updated kernel for a rom you're currently using? What steps should be taken for that?
Click to expand...
Click to collapse
When changing Kernels but not the ROM in a separate recovery session than a ROM flash, you don't need to "dirty wipe." Just wipe cache and dalvik. Dalvik wipe is key so that the dalvik virtual machine can be rebuilt by the new kernel.

Thanks for the info guys.

I usually dirty on nightlies until I have issues. Always clean when switching roms.
Sent from my SGH-I535 using xda app-developers app

It is always good to complete wipe when switching roms.
Sent from my SCH-I535 using xda premium

What if im just switching between stock rom nandroid backups? Can I just restore from one to one? I only have two backups anyways both for stock. Never flashed a rom before
Tap'n

grin0048 said:
This isn't meant to be rude or anything, I'm just honestly wondering if there's any logical reason to think this is substantively different than just not wiping data?
Click to expand...
Click to collapse
I find that this method works better than just wiping cache and dalvik, since im advance restoring data over a clean flash. both ways are considered dirty flashing tho.

I wipe dalvik, cache and battery stats. Works like a charm thus far. Wiping data is what blows out the IMEI correct?

coldhardtruth said:
I wipe dalvik, cache and battery stats. Works like a charm thus far. Wiping data is what blows out the IMEI correct?
Click to expand...
Click to collapse
Incorrect, flashing anything is what may lead to losing your IMEI. Backup using the appropriate tools in the development section. Btw stop wiping battery stats, it's not necessary.
Sent from my SCH-I535 using xda app-developers app

droidstyle said:
why do so many folks wipe cache and dalvik after they wipe data? A data wipe/factory reset wipes all three, there is no need to do anything else.
I always wipe data, flash rom, then advance restore data only from a nandroid...dirty flashing in its most elegant form
Click to expand...
Click to collapse
Factory reset doesn't touch the davlik(Which I speculate(Guess) has to do more with the kernel than anything)
apet8464 said:
So we all agree that a dirty flash is just wipe cache/dalvik cache.
Do you wipe prior to re-flashing, or afterwards? Does it matter?
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
This is what I meant as a dirty flash when I made the thread yes...
xxx420 said:
What about flashing a new, updated kernel for a rom you're currently using? What steps should be taken for that? For example, cleanrom 2.1 comes with cleankernel 1.1, but the kernel has been updated to 1.2 and is out as a seperate download. How would you update just the kernel that's made specifically for the rom you use?
Click to expand...
Click to collapse
Usually when I flash a new kernel, or a different kernel, I just wipe the davlik cache and I am fine. There was some reboots after the first boot on the AOSP ROMs but afterwards it ran fine.
SlimSnoopOS said:
Incorrect, flashing anything is what may lead to losing your IMEI. Backup using the appropriate tools in the development section. Btw stop wiping battery stats, it's not necessary.
Sent from my SCH-I535 using xda app-developers app
Click to expand...
Click to collapse
SlimSnoop is correct. According to one of the developers of a very prominent ROM the IMEI issue was because our phones got confused sometimes(Randomly phone to phone) and tried to reset during a flash. The data it tried to reset was bogus, therefor losing IMEI. He is also correct far as the wiping battery stats. It's only usefull when you have really strange results with battery. Google for the real reason to use them.
Far as backing up your IMEI so you will never run into the problem of losing it.... go into your terminal (almost every ROM has a Terminal emulator)
Type this:
su
then hit enter. Grant permissions
then type:
reboot nvbackup
then hit enter. This will make your phone do some shyt and reboot, but you really shouldn't need to worry about your IMEI after this. Regardless of how many ROMs you flash or what you do or who you date or who you kiss, etc... blah blah....
This really should be the end all for the IMEI...

annoyngduck said:
Wipe data? What's that for? Is THAT why my phone won't turn on..........
Nightlies: No data wipe (yes to cache/dakvik)
New rom, even if it's the same android build: always, full wipe
Themes: No wipe at all, flash right on, right after flashing rom's. Don't like to wait for two bootups!
Sent from my SCH-I535 using xda premium
Click to expand...
Click to collapse
New rom only when their bases are different , like going from ics to jb, or the dev says to do it (Even then Ill try it without a wipe because im lazy).
Themes I never wipe anything
Nightlies never wipe anything.
Edit: If I do have issues I then go back and wipe delvik and cache . That usually straightens out any issues and allows me to keep my setup.

tonu42 said:
Hey but you know I'm right
Click to expand...
Click to collapse
Actually you're not right.
Sent from my SCH-I535 using Tapatalk 2

[Q] Re-install Gapps?

Hello,
I am completely new to the rooting world and have what might be a very basic question to most of you. I performed my first root over the weekend on my Verizon GS3 and after reading many of the benefits of flashing CM10.1, I jumped ship from stock touchwiz/jellybean to CM10.1. After flashing CM10.1, I realized the Gapps zip file I flashed was 20121011, which is the version for CM10.0. My phone is running fine with no bugs, but I’d like to know how I can go about getting the correct version of Gapps to run with CM10.1? Can I just uninstall the Gapps file I flashed and re-flash the current version? Or, do I need to start from scratch and wipe everything out again and re-install CM10.1 and the current Gapps version?
Any help would be greatly appreciated...

You can just flash the newest version of gapps. What I do is, before I flash, wipe both caches, flash, wipe caches again, reboot. You dont have to do a full wipe if your flashing the same rom, unless it is recommend for that rom.
Sent from my PACmaned SCH-I535

Re-install Gapps
Casper34 said:
You can just flash the newest version of gapps. What I do is, before I flash, wipe both caches, flash, wipe caches again, reboot. You dont have to do a full wipe if your flashing the same rom, unless it is recommend for that rom.
Sent from my PACmaned SCH-I535
Click to expand...
Click to collapse
Thanks PACmaned, I will try that. I assume by wiping the caches you mean, "Wipe cache partition" and "Dalvik cache"? One last question just so I understand the process correctly. First, wipe both caches...Second, install the new version of Gapps. Third, wipe both caches again, is that correct?....I just want to make sure I follow the steps to a "T", so I don't end up with a brick.
Thanks again for you help...
David

Yep!! Thats how I do it when I flash a ROM and I have not had an issue yet!
Sent from my PACmaned SCH-I535

Casper34 said:
Yep!! Thats how I do it when I flash a ROM and I have not had an issue yet!
Sent from my PACmaned SCH-I535
Click to expand...
Click to collapse
Thanks again, I will try that..

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