Nexus 5 stuck on Google start-up screen - Nexus 5 Q&A, Help & Troubleshooting

My Nexus 5 is stuck on the Google start-up screen. I can get into Recovery mode but any combination of buttons I press (holding power + pressing volume up button once) to access the recovery mode menu (on the android guy with "no command" screen) reboots the phone and it gets stuck on the start-up screen again !
Can anybody help me ?
I have no knowledge of rooting or anything of that sort. I am basically a novice. Just following instructions online and youtube which did not work on my phone. Please help.
~ Rohan.

So, it may be the infamous power button. If you gently whack the Nexus 5 onto your palm (not too hard, your digitiser is delicate) it can sometimes free it up. If it's not that you may need to factory reset the phone:
1. From the Recovery menu (the little green guy) hold down power then press the down arrow. That'll give you a command to factory reset.
2. If that fails, you can access the sideload menu and reimage the phone from the instructions posted here: https://developers.google.com/android/images
Post here if you get stuck.

Hi Zerbey,
Thank you for your response. I have actually replaced the power button very recently.
Method-1 suggested by you did not work. I shall try method-2 and keep you posted.
Thanks once again !
~ Rohan

Update:
Hi Zerbey,
I have tried method-2 as per the instructions:
downloaded the factory image 6.0.1 (M4B30X, Oct 2016). Used below command
fastboot oem unlock
flash-all
this is the message i get from the terminal:
<remote: not supported in locked device>
archive does not contain 'boot.sig'
archive does not contain 'recovery.sig'
archive does not contain 'system.sig'
archive does not contain 'vendor.sig'

Did you press enter after typing fastboot OEM unlock?
As a reminder, unlocking the bootloader will wipe your data.

oem unlock not alowed how to soloved thiss ?
oem unlock not alowed how to soloved thiss ? phon freez on start up log and restart again and again

rohan.pardeshi said:
My Nexus 5 is stuck....Rohan.
Click to expand...
Click to collapse
When you see that no command screen, the phone is waiting for you to give a command. Just press and hold Power button, and at the same time press Volume Up once(for atleast 10 seconds). Release both buttons after the boot options appears. Wipe data, cache partion and reboot. If it doesnt work then a workaround would be to flash TWRP recovery(Checkout the TWRP thread on xda), boot into it and delete your corrupt /system, /data partitions and either
1. Flash your stock rom using fastboot or
2. Flash a custom rom (recommended).
Also i would recommend you to follow the instructions given on xda instead of checking out youtube because some users use different methods for flashing.
This should solve your problem. Hope it helps
Regards,
Raheel

When you type "fastboot devices" and press enter, the phone's serial # appears?
When you get into fastboot mode, does the phone stay there or does it reboot after a few seconds?

audit13 said:
When you type "fastboot devices" and press enter, the phone's serial # appears?
When you get into fastboot mode, does the phone stay there or does it reboot after a few seconds?
Click to expand...
Click to collapse
The phone stays there. Does not reboot.

Does the fastboot command return the device serial #? If not, adb is not properly set up.

Related

[Guide] Returning to Stock and/or Unbricking your device Updated for Android 4.3!!!

First of all, I am in no way responsible for anything you do to your tablet period.
I have seen a couple of people asking how to return the Nexus 7 to stock after it has been unlocked, rooted and so on, so I figured I would write a quick guide as its super easy to do. Also, please make sure you make a backup of anything you don't want to lose. This is important.
Before you begin, please make sure you have ADB and Fastboot drivers installed and working.
1) Download the factory image for the Nexus 7 at https://dl.google.com/dl/android/aosp/nakasi-jwr66v-factory-d341d356.tgz
2) Extract the factory image into the same directory as your ADB and Fastboot executibles (e.g. "\android-sdk\platform-tools")
3) Plug in your device. If you are booted into Android, open a command prompt to your ADB and Fastboot directory, then type
Code:
adb reboot bootloader
If your device is powered off, press and hold both volume keys and the power button simultaneously. After holding all three buttons for a couple of seconds, your bootloader should launch. This should reboot you into the bootloader.
4) Type
Code:
fastboot flash bootloader bootloader-grouper-4.23.img
5) Next type
Code:
fastboot reboot-bootloader
6) Now type
Code:
fastboot -w update image-nakasi-jwr66v.zip
7) Optional: If you would like to relock your bootloader for warranty or security purpouses, make sure you are in your bootloader screen again and type
Code:
fastboot oem lock
8) If your tablet hasn't already rebooted automatically, type
Code:
fastboot reboot
That should do it. You should now be on stock Android 4.3 and ready to send in your tablet for warranty purposes if you so desire.
Additionally, here is an instructional video courtesy of XDA user SladeNoctis.
Also, thank you to XDA user Shano56 for the formatting help on this post.
chris.wueste said:
First of all, I am in no way responsible for anything you do to your tablet period.
I have seen a couple of people asking how to return the Nexus 7 to stock after it has been unlocked, rooted and so on, so I figured I would write a quick guide as its super easy to do. Also, please make sure you make a backup of anything you don't want to lose. This is important.
1) Make sure you have your ADB and Fastboot drivers installed and working.
2) Download the factory image for the Nexus 7 here
3) Unzip the factory image into the same directory as your Adb and Fastboot drivers.
4) Plug in your device. With the device on the home screen, type "ADB reboot bootloader" or if your device is off, press and hold both volume keys and press the power button. After holding all three buttons for a couple of seconds, your bootloader should launch.
5) This should reboot you into the bootloader. Now type "fastboot flash bootloader bootloader-grouper-3.34.img"
6) Next type "fastboot reboot-bootloader"
7) Now type "fastboot -w update image-nakasi-jrn84d.zip"
8) Optional: If you would like to relock your bootloader for warranty purposes, make sure you are in your bootloader screen again and type "fastboot oem lock"
9) I don't remember if the tablet automatically reboots at this point but if it doesn't just type "fastboot reboot"
That should do it. You should now be on stock Android 4.1 and ready to send in your tablet for warranty purposes.
Additionally, here is an instructional video courtesy of XDA user SladeNoctis.
Click to expand...
Click to collapse
You should change the title to [Guide] How to return to Stock / Unbrick your Nexus 7
Helps out those getting bootloops or softbricks from geting root access in certain ways or messing with the build.prop
SladeNoctis said:
You should change the title to [Guide] How to return to Stock / Unbrick your Nexus 7
Helps out those getting bootloops or softbricks from geting root access in certain ways or messing with the build.prop
Click to expand...
Click to collapse
Not a bad idea. Done and done. Also, I have proofread it several times over to ensure it is correct but would you mind making sure that all of the commands were typed correctly. My eyes are going crosseyed over here.
Nice guide man, I changed the format a little to make it easier to read. Use it if you want, won't be offended if you don't.
First of all, I am in no way responsible for anything you do to your tablet period.
I have seen a couple of people asking how to return the Nexus 7 to stock after it has been unlocked, rooted and so on, so I figured I would write a quick guide as its super easy to do. Also, please make sure you make a backup of anything you don't want to lose. This is important.
Before you begin, please make sure you have ADB and Fastboot drivers installed and working.
1) Download the factory image for the Nexus 7 here
2) Extract the factory image into the same directory as your ADB and Fastboot executibles (e.g. "\android-sdk\platform-tools")
3) Plug in your device. If you are booted into Android, open a command prompt to your ADB and Fastboot directory, then type
Code:
adb reboot bootloader
If your device is powered off, press and hold both volume keys and the power button simultaneously. After holding all three buttons for a couple of seconds, your bootloader should launch. This should reboot you into the bootloader.
4) Type
Code:
fastboot flash bootloader bootloader-grouper-3.34.img
5) Next type
Code:
fastboot reboot-bootloader
6) Now type
Code:
fastboot -w update image-nakasi-jrn84d.zip
7) Optional: If you would like to relock your bootloader for warranty or security purpouses, make sure you are in your bootloader screen again and type
Code:
fastboot oem lock
8) If your tablet hasn't already rebooted automatically, type
Code:
fastboot reboot
That should do it. You should now be on stock Android 4.1 and ready to send in your tablet for warranty purposes if you so desire.
Additionally, here is an instructional video courtesy of XDA user SladeNoctis.
If you want to use it and are too lazy to quote my post - http://pastie.org/pastes/4279753/text
The commands look good to me however I've never used "fastboot -w update" so can't say for that
Shano56 said:
Nice guide man, I changed the format a little to make it easier to read. Use it if you want, won't be offended if you don't.
First of all, I am in no way responsible for anything you do to your tablet period.
I have seen a couple of people asking how to return the Nexus 7 to stock after it has been unlocked, rooted and so on, so I figured I would write a quick guide as its super easy to do. Also, please make sure you make a backup of anything you don't want to lose. This is important.
Before you begin, please make sure you have ADB and Fastboot drivers installed and working.
1) Download the factory image for the Nexus 7 here
2) Extract the factory image into the same directory as your ADB and Fastboot executibles (e.g. "\android-sdk\platform-tools")
3) Plug in your device. If you are booted into Android, open a command prompt to your ADB and Fastboot directory, then type
Code:
adb reboot bootloader
If your device is powered off, press and hold both volume keys and the power button simultaneously. After holding all three buttons for a couple of seconds, your bootloader should launch. This should reboot you into the bootloader.
4) Type
Code:
fastboot flash bootloader bootloader-grouper-3.34.img
5) Next type
Code:
fastboot reboot-bootloader
6) Now type
Code:
fastboot -w update image-nakasi-jrn84d.zip
7) Optional: If you would like to relock your bootloader for warranty or security purpouses, make sure you are in your bootloader screen again and type
Code:
fastboot oem lock
8) If your tablet hasn't already rebooted automatically, type
Code:
fastboot reboot
That should do it. You should now be on stock Android 4.1 and ready to send in your tablet for warranty purposes if you so desire.
Additionally, here is an instructional video courtesy of XDA user SladeNoctis.
If you want to use it and are too lazy to quote my post - http://pastie.org/pastes/4279753/text
The commands look good to me however I've never used "fastboot -w update" so can't say for that
Click to expand...
Click to collapse
I updated the OP with your edits in it. Thanks for the help. I quoted you at the bottom
omg thank you so much. u saved my device
jarjar124 said:
omg thank you so much. u saved my device
Click to expand...
Click to collapse
Very welcome
Assuming you have a nandroid, can you boot into the bootloader, and simply ADB reboot recovery? Or does that bug prevent you from even doing that?
chrisjm00 said:
Assuming you have a nandroid, can you boot into the bootloader, and simply ADB reboot recovery? Or does that bug prevent you from even doing that?
Click to expand...
Click to collapse
In some cases due to the CWM not being official it cause bootloops by going to recovery in the bootloader.
SladeNoctis said:
In some cases due to the CWM not being official it cause bootloops by going to recovery in the bootloader.
Click to expand...
Click to collapse
There's a CWM official out?
Sent from my Nexus 7 using Tapatalk 2
chrisjm00 said:
Assuming you have a nandroid, can you boot into the bootloader, and simply ADB reboot recovery? Or does that bug prevent you from even doing that?
Click to expand...
Click to collapse
Assuming you have already flashed CWM, then the command would actually be fastboot reboot recovery. Not sure what but you speak of.
Shano56 said:
There's a CWM official out?
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Yes. There sure is. If you have Rom Manager installed it can be flashed directly from there.
I dont think you can really hard brick this device anyways
I'm sitting here at the command prompt with it on "erasing userdata"
It's been a couple minutes and I'm freakin' out! How long is it supposed to take? Everything flashed correctly, if I start the device now will there be an issue?
EDIT: Nevermind, just rebooted from the bootloader in the tablet and it booted fine. I'll get the OTA to 4.1.1 and that should probably fix any outstanding little issues.
hard brick?
I am stuck at the Google logo with a padlock and I'm pretty sure I have a hard bricked tablet. fastboot doesn't see the tablet or my computer for that mater through dmesg.
I've rebooted it countless times with vol + and vol - pushed and any combo thereof. It will only turn off completely when the battery dies because holding down the power key for 10 secs just reboots it back to the Google logo in about 5 seconds. I guess at this point I'm just waiting for Google to give me a RMA for a refund and I'll move on unless someone has any other ideas?
chris.wueste said:
If your device is powered off, press and hold both volume keys and the power button simultaneously. After holding all three buttons for a couple of seconds, your bootloader should launch. This should reboot you into the bootloader.
Click to expand...
Click to collapse
Pressing and holding the Volume down + Power buttons works just fine to launch the bootloader (at least for me).
No need to press (and force) the entire volume rocker button at all.
nugalonious said:
I am stuck at the Google logo with a padlock and I'm pretty sure I have a hard bricked tablet. fastboot doesn't see the tablet or my computer for that mater through dmesg.
I've rebooted it countless times with vol + and vol - pushed and any combo thereof. It will only turn off completely when the battery dies because holding down the power key for 10 secs just reboots it back to the Google logo in about 5 seconds. I guess at this point I'm just waiting for Google to give me a RMA for a refund and I'll move on unless someone has any other ideas?
Click to expand...
Click to collapse
Try and press and hold just the power button for 30 seconds or so to re-boot the tablet and you should be fine and it should boot up just fine. From fastboot you cannot go into cwm recovery because of a bug.
I'm trying to return to stock but get this message in the window from the ADB command after flashing the stock ROM:
​FAILED (remote: (FileWriteFailed))
Anyone seen that before or have any ideas to fix?
I tried wiping cache/factory reset from CMW but no joy.
Thanks. Worked for me. I did get worried when i got (data transfer failure (too many links)) error when trying to flash the bootloader.
Turns out it was the USB port. I switched the ports and all was well.
But I followed the commands in side the flash-all.sh file
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot flash bootloader bootloader-grouper-3.34.img
fastboot reboot-bootloader
fastboot -w update image-nakasi-jrn84d.zip
---------- Post added at 02:16 PM ---------- Previous post was at 02:13 PM ----------
yeahthatsme said:
I'm trying to return to stock but get this message in the window from the ADB command after flashing the stock ROM:
​FAILED (remote: (FileWriteFailed))
Anyone seen that before or have any ideas to fix?
I tried wiping cache/factory reset from CMW but no joy.
Click to expand...
Click to collapse
Try the commands i posted above and see what happens
Nuts. I tried it on many USB ports and did your commands one by one. Ended up in the same spot. It happens when writing 'userdata'...

[Q] How to recover a bricked A510? Bootloader can't be unlocked!

Hi folks,
I have been using Acer A510 for almost 1 year now, and upgraded 7 months ago to the latest JB OTA. I haven't ever rooted it.
Since 2 days, it can't boot suddenly, stuck with the following error message:
Booting failed
Bootloader vJB-d0ca683: Starting Fastboot USB download protocol
Click to expand...
Click to collapse
After a bit of Googling, I tried to unlock the bootloader, as a way to recover the tablet. But that keeps failing as well:
[ [email protected]: /tmp ]# fastboot oem unlock
...
Click to expand...
Click to collapse
At this step, I can see the unlock icon and played with Vol+ and Vol- to quickly select the "Unlock" option, and this is what I get on the tablet:
Unlocking...
Bootloader vJB-d0ca683: Starting Fastboot USB download protocol
Click to expand...
Click to collapse
And on the computer (kind of error messages that are of no help):
...
FAILED (remote: (Unknown error code))
Click to expand...
Click to collapse
So it appears the bootloader can not be unlocked, and I can not even enter the recovery.
I've read somewhere that it may be possible to recover in APX mode.
So is there any way to recover it (either through the bootloader or through APX mode)?
Thanks for your help!
Booting failed.......Bootloader VJB-d0ca683
Hi.
I have been using Acer A510 for almost 1 year now, I haven't ever rooted it.
Today, it can't boot suddenly, stuck with the following error message:
Quote:
Booting failed
Bootloader vJB-d0ca683: Starting Fastboot USB download protocol
Please help me.....
h4ck3r3l said:
Hi folks,
I have been using Acer A510 for almost 1 year now, and upgraded 7 months ago to the latest JB OTA. I haven't ever rooted it.
Since 2 days, it can't boot suddenly, stuck with the following error message:
After a bit of Googling, I tried to unlock the bootloader, as a way to recover the tablet. But that keeps failing as well:
At this step, I can see the unlock icon and played with Vol+ and Vol- to quickly select the "Unlock" option, and this is what I get on the tablet:
And on the computer (kind of error messages that are of no help):
So it appears the bootloader can not be unlocked, and I can not even enter the recovery.
I've read somewhere that it may be possible to recover in APX mode.
So is there any way to recover it (either through the bootloader or through APX mode)?
Thanks for your help!
Click to expand...
Click to collapse
I am having the same problem with my acer A700,I tried anything I could and I still did not find any solution,help would be very appriciated.
Same situation
h4ck3r3l said:
Hi folks,
I have been using Acer A510 for almost 1 year now, and upgraded 7 months ago to the latest JB OTA. I haven't ever rooted it.
Since 2 days, it can't boot suddenly, stuck with the following error message:
After a bit of Googling, I tried to unlock the bootloader, as a way to recover the tablet. But that keeps failing as well:
At this step, I can see the unlock icon and played with Vol+ and Vol- to quickly select the "Unlock" option, and this is what I get on the tablet:
And on the computer (kind of error messages that are of no help):
So it appears the bootloader can not be unlocked, and I can not even enter the recovery.
I've read somewhere that it may be possible to recover in APX mode.
So is there any way to recover it (either through the bootloader or through APX mode)?
Thanks for your help!
Click to expand...
Click to collapse
+1
I get exactly the same problem this WE :crying:
I never root/flash/play with recovery or anything else.
Tablet shutdown by itself, then after restart I get trouble to boot :
First the Android said it was unable to start due to encryption : "encryption unsuccessful > need factory reset". Even if I NEVER activate encryption !
I try couple of reboot without suceess, then now it stop on Acer logo and go to fastboot mode at each startup.
Then I have exactly same trouble : impossible to unlock bootloader using fastboot.
No way to flash something.
Need help !
If fastboot is available, you can try to boot CWM Recovery or TWRP recovery
fastboot -i 0x0502 boot C:\....\cwm-recovery.img
From there you can try a factory reset
Shreps said:
If fastboot is available, you can try to boot CWM Recovery or TWRP recovery
fastboot -i 0x0502 boot C:\....\cwm-recovery.img
From there you can try a factory reset
Click to expand...
Click to collapse
It doesn't work as the bootloader is still locked !
Code:
FAILED (remote: bootloader is locked.)
And it's impossible to unlock bootloader as describe in the post.
Any other idea ?
You can try to download the full ROM from acer Web Site (GEN1 or CUS1 depending on what you had before)
rename it to update.zip and put it on your sdcard
Reboot your tablet in recovery if you can to flash it, or in bootloader (don't remember if the Acer bootloader can flash an update.zip)
katull said:
Hi.
I have been using Acer A510 for almost 1 year now, I haven't ever rooted it.
Today, it can't boot suddenly, stuck with the following error message:
Quote:
Booting failed
Bootloader vJB-d0ca683: Starting Fastboot USB download protocol
Please help me.....
Click to expand...
Click to collapse
Its 2015 now but i will post this anyway..
Try this
1st, Boot into recovery:
- Press [vol-] + [power]
- Once the tablet vibrated, let go [power] and keep [vol-].
- Now the tablet vibrates a second time, let go [vol-] and press [vol+] quick
- Once the text that appears on the screen ("loading recovery kernel image"), let go [vol+].
2nd, choose "Wipe data cache & factory reset" via volume rocker and power button to select it.
3rd, choose "reboot"
I solved mine using that steps, hopefully it will solve yours.
Thank you very much!!! It worked for me!
Zewz said:
Its 2015 now but i will post this anyway..
Try this
1st, Boot into recovery:
- Press [vol-] + [power]
- Once the tablet vibrated, let go [power] and keep [vol-].
- Now the tablet vibrates a second time, let go [vol-] and press [vol+] quick
- Once the text that appears on the screen ("loading recovery kernel image"), let go [vol+].
2nd, choose "Wipe data cache & factory reset" via volume rocker and power button to select it.
3rd, choose "reboot"
I solved mine using that steps, hopefully it will solve yours.
Click to expand...
Click to collapse
So I have tried the above listed technique and it brings up the clockwork mod screen but does not go past it. Any more suggestions?
Thanks.
------------------------------------------------------------------------------------
- Press "vol-" + "power"
- Once the tablet vibrated, let go "power" and keep "vol-".
- Now the tablet vibrates a second time, let go "vol-" and press "vol+" quick
- Once the text that appears on the screen ("loading recovery kernel image"), let go "vol+".
2nd, choose "Wipe data cache & factory reset" via volume rocker and power button to select it.
3rd, choose "reboot"
------------------------------------------------------------------------------------
After trying many other approaches this one worked for me! Thank you very much!
Hello everyone, it may be late for you but i found a solution for a bricked A510 :
for my part i only had access to bootloader unlock and fastboot, but it didn't communicate with my laptop
So i found a software called DriverHub and launched it with my A510 connected to my laptop
It found the right driver for it (was not the of from Acer or any universal ADB driver) and i could use the fastboot mode to unlock OEM and flash TWRP, and now i have Cyanogen running on my tab who came back from dead
Here's a link to the software : www drvhub net
Have a nice day

[Completed] Bricked zenfone 2 - OTA update while rooted - unsucessful flash

My problem:
I had a temporary CWM installed on my Asus Zenfone 2 ZE551ML 4gb/32GB and without thinking, installed an OTA update form 2.20.40.63 to 2.20.40.90.
My phone booted to the Asus logo with the loading circle and got no further.
Sadly I did not have USB debugging enabled at the time so I cant detect it in ADB in recovery mode to sideload.
I have tried to copy firmware to my Micro sd and load from there but my phone has never recognised or mounted SD cards so that is out of the question.
As a last resort I tried flashing the Boot.img, Recovery.img, droidboot.img and system.img, now it wont even get to the asus logo without coming up with and android logo with a red triangle above it, the same logo that comes up when I now try to enter recovery mode.
I have recorded a video of the process I followed to flash the zfone, but cant post it here as this is my first post, but I think I can send it to someone through messages
What am I doing wrong and how do I get my phone back?
Any help would be hugely appreciated, and keep in mind Im a bit of a noob so set by step instructions would be awesome, Thanks guys
Update: the original .img files i used were apparently already rooted, so I am now extracting the 2.20.40.90 firmware from the official Asus site and I will try to flash with those.
but I cant find the system.img inside the UL-Z00A-WW-2.20.40.90-user.zip and was wondering, do I need to take out the Boot.img. droidboot.img and recovery.img then turn all the existing files into a system.img?
Hi, thank you for using XDA Assist. Try asking in your device's specific forum here, http://forum.xda-developers.com/zenfone2 They are the experts on your device. I would start by posting in this thread, http://forum.xda-developers.com/zenfone2/help/help-post-questions-instead-making-t2997779
jd1639 said:
Hi, thank you for using XDA Assist. Try asking in your device's specific forum here, http://forum.xda-developers.com/zenfone2 They are the experts on your device. I would start by posting in this thread, http://forum.xda-developers.com/zenfone2/help/help-post-questions-instead-making-t2997779
Click to expand...
Click to collapse
Ahh thank you, sorry I didnt really know where to post the question
Fixed my phone!!
Ok guys, so I figured out what I was doing wrong.
I preformed the flash correctly with pre-rooted system.img, but I didnt wipe the cache, as soon as I did, my phone booted to a normal rooted device!!
If you want to do this yourself, download pre rooted versins of these files (easy to find with a quick google search)
Recovery.img
Boot.img
Droidboot.img
System.img
ADB tethered launcher (not needed if your phone can enter recovery mode)
and place them all in a new folder (lets call it zenUnbrick)
Boot your zenfone 2 into fast boot mode, then connect it to your pc
(Hold volume up button and power button, when your phone vibrates let go of the power button and continue to hold the volume + button until you see the fastboot screen)
Now hold down shift + right click inside the zenunbrick folder and select 'open command window here'
When that opens, run these commands in this order. Wait till each one finishes and be aware that the (fastboot flash system system.img) command takes quite a while to work its magic, so be patient and dont turn off your phone
fastboot flash fastboot droidboot.img
fastboot flash recovery recovery.img
fastboot flash boot boot.img
fastboot flash system system.img
fastboot reboot
when your phone reboots, it will most likely still seem bricked, but do not despair!! this is where you open up the ADB tethered launcher, although if your phone can enter recovery mode then you dont need this program
Option 1 - If your phone can enter recovery mode
Boot your phone into fastboot mode
use volume up and down to select recovery mode and use power button to select
wait for your phone to reboot
when you see the broken android symbol, press volume up button and power button simultaneously
select wipe cache and wait (it takes a while)
select reboot now
Your phone is now unbricked and rooted!!
Option 2 - If your phone cant enter recovery mode
Boot your phone into fastboot mode and connect it to your pc
open ADB tethered launcher
type 'ACCEPT'
when it loads type 'T4'
wait for your phone to reboot
select wipe cache and wait (it takes a while)
Select reboot now
Your phone is now unbricked and rooted!!

Nexus 5 Update Marshmallow Boot stuck

Hi !
So I just followed this tutorial : http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701/
I used the second way, because the first one told me that 'system.img' was missing (not the only one), whatever; second method was good I did all it was asked but I didn't saw the one command out of the box "fastboot flash cache C:\androidimage\cache.img", I mean, I did all the command in the 'Code' box but the one 'fastboot flash cache C:\androidimage\cache.img' was out and I miss it.
So next I followed the step, select "Recovery" using the volume buttons, press Power Button + Volume UP when the android is dead with triangle, it's okay, but now the phone just rebooted and there were no 'Select "Wipe data/factory data reset' as tutorial said there will be.
And now I'm stuck in the boot animation since around 15 minutes I tried to update to 6.0.0 and it's just stuck in the animation.
What must I do ? Because I don't have USB DEBUG activated because it's wiped so ? I just wait ? What can I do ?
I really need help right now. Dunno what to do, just wait ? Don't think this is normal at all.
Thank,
Best regards.
Dogematique said:
Hi !
So I just followed this tutorial : http://forum.xda-developers.com/google-nexus-5/general/tutorial-how-to-flash-factory-image-t2513701/
I used the second way, because the first one told me that 'system.img' was missing (not the only one), whatever; second method was good I did all it was asked but I didn't saw the one command out of the box "fastboot flash cache C:\androidimage\cache.img", I mean, I did all the command in the 'Code' box but the one 'fastboot flash cache C:\androidimage\cache.img' was out and I miss it.
So next I followed the step, select "Recovery" using the volume buttons, press Power Button + Volume UP when the android is dead with triangle, it's okay, but now the phone just rebooted and there were no 'Select "Wipe data/factory data reset' as tutorial said there will be.
And now I'm stuck in the boot animation since around 15 minutes I tried to update to 6.0.0 and it's just stuck in the animation.
What must I do ? Because I don't have USB DEBUG activated because it's wiped so ? I just wait ? What can I do ?
I really need help right now. Dunno what to do, just wait ? Don't think this is normal at all.
Thank,
Best regards.
Click to expand...
Click to collapse
You can do two things.
Type
fastboot format userdata
fastboot format cache
while your phone in fastboot mode
Or
Enter to recovery and there press and hold the power key while press and release the volume_up key, then the recovery menu will be visible. There you can select factory reset

[GUIDE] How to Unlock Bootloader and Install TWRP

First, you’ll need ADB and fastboot, which can be downloaded here. To set up ADB, go to Settings/About Phone/Software Info and tap on build number until you get a toast notification saying “You are now a developer!” You will now have a new category in Settings called Developer Options. Go into developer options and enable USB debugging and OEM Unlock. You won't be able to turn it on if your phone is plugged in to your PC. Once you've turned it on, go to your PC, open Terminal or Command Prompt and type “adb devices”. Then plug in your phone and hit enter. You'll get a prompt on your phone to “Allow connection​s to this PC?”. Check Always allow and Allow. Now run “adb devices” again. Your device should now appear in Terminal.
If you have a SD card, download the latest zips from here and here onto your​ SD card. It'll save you a step later on.
Then you'll need to reboot to fastboot by holding down VOL- and plugging in USB while power is off. Alternatively​, you can type “adb reboot bootloader” in Terminal or Command Prompt.
Next, you'll need to unlock the bootloader. Bootloader unlocking​ will factory reset your phone! Once you're in fastboot, run “fastboot oem unlock” in Terminal or Command Prompt. Now the bootloader is unlocked.
Now it's time to flash TWRP, a custom recovery for Android. It's going to be the way you install custom ROMs and add-ons. Download Official TWRP here. Once you've extracted​ the recovery.zip, run this command: “fastboot flash recovery path/to/recovery.img”. Once the file has flashed, disconnect the USB cable and battery. The next step is important! You're going to need to boot into TWRP for the first time. With the phone off, hold down VOL- and press power until the phone vibrates and the LG logo appears. While still holding down VOL-, release and immediately press and hold power. You should now be at a white screen that says “Reset all data and restore to factory settings?” Use the volume and power keys to select yes and yes again. If you've installed​ TWRP successfully​, it won't actually factory reset your phone. Now you should see the TWRP screen. If you don't see the TWRP screen and instead see a floating ring that says “Erasing”, don't worry. Let if complete and try flashing TWRP in fastboot again.
In TWRP, you'll be greeted by a screen that says “Swipe to allow modifications?” Swipe it, then go to the Wipe tab. Go to Wipe, then Format Data, then type yes, then go to the Reboot tab and select Recovery to reboot into TWRP again. If you're prompted to install the TWRP app, don't bother.
Once you've rebooted into TWRP again, it's time to disable encryption​ and root the phone. Download the latest zips here and here. Skip downloading them if you already put them on your SD card earlier. On your PC, push the files to your phone using the command “adb push path/to/file.zip /sdcard/”. You can drag and drop the file into Terminal or Command Prompt to copy file path. Then go to the Install tab in TWRP and select the no-verity-opt-encrypt.zip, tap Add more zips, then add the root zip, then swipe to flash. Let the zips flash, then tap the Reboot System button when it's done. Your phone will take a little longer to boot and might reboot a couple times.
Once you're back in the OS, go through the setup wizard. Set up Magisk. If you stay on stock, you should install an app like Quick Reboot Pro from the Play Store to make it easier to reboot into recovery. Now reboot back into TWRP and go to the Backup tab. If you have a SD card, set it as the backup location. You can enable compression if you want. This will make a full system backup that you can restore from as long as you have TWRP. If the backup takes up too much space, you can put it in Google Drive or your PC later on.
You are now ready to install ROMs!
Thanks to @messi2050
My device will not start boot loader with command "adb reboot bootloader" or with the method of holding volume down and pugging it into the PC, it just restarts and boots like normal. i cannot even get to the stage to use the command "fastboot oem unlock"
I cant get it too boot into TWRP
? Has anyone else have had issues geting into bootloader mode on lg stylo 2 boost mobile.
meg540 said:
? Has anyone else have had issues geting into bootloader mode on lg stylo 2 boost mobile.
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Click to collapse
Please explain more in detail so you can be helped better In what ways? What are you doing to get into bootloader mode? I've never had any issues on my T-Mobile Stylo 2 plus. Are you trying to get into bootloader using buttons manually or through twrp or adb?
SM210 said:
Please explain more in detail so you can be helped better In what ways? What are you doing to get into bootloader mode? I've never had any issues on my T-Mobile Stylo 2 plus. Are you trying to get into bootloader using buttons manually or through twrp or adb?
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Click to collapse
Im trying too put my phone into bootloader mode to unlock bootloader but it keeps restarting phone and wont go into it. Also i have tryed on my computer command promt but phone into bootloader mode it. Restarts phone but not into bootloader mode. Also i have tryed power down and holding power button that doesn't work.
meg540 said:
Im trying too put my phone into bootloader mode to unlock bootloader but it keeps restarting phone and wont go into it. Also i have tryed on my computer command promt but phone into bootloader mode it. Restarts phone but not into bootloader mode. Also i have tryed power down and holding power button that doesn't work.
Click to expand...
Click to collapse
You hold volume DOWN and power then soon as screen comes on and you see LG you let go of the power button and then immediately press power again and you never let off volume DOWN. That doesn't work?
Edit
SM210 said:
You hold volume DOWN and power then soon as screen comes on and you see LG you let go of the power button and then immediately press power again and you never let off volume DOWN. That doesn't work?
Edit
Click to expand...
Click to collapse
Ill try that i think i wasnt doing it correctly i was holding down power button then i let go an i was holding down the down button. Ty for u help ill try it later today.
Hey there, I've got the LG K530F, is there any chance of unlocking it? I looked up the LG developer website and it's not listed in there, filling that form will just lead to a popup regarding that. I thought about downgrading it back to MM (Android 6.0) using the K350F10d_00_02221.kdz firmware package aiming to be able to run fastboot oem unlock, but I'm afraid of getting it bricked. Anyone tried it? I recall doing something like that to unlock the LG Optimus L9, but that one was way older and had much weaker security measurements.
Can't get into Bootloader
Hi i have a LGL82VL and when trying to use adb reboot bootloader it just restarts, And when using Vol Down and Power it just comes to the factory reset page (Hard Reset)
Any ideas on how to get to the bootloader? i checked with fastboot devices while on the hard reset page and got nothing. Any Ideas?

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