Develop Bugs

[Q] Stuck in Bootloader, no input possible - How to reset?

Hi,
I am stuck in the bootloader and no input with the volume rocker is possible anymore.
How to reset it? Pull out the battery? I cannot find a reset button somehow..
Cheers

Try disconnecting the battery. I assume that you are not midway flashing some OS or ROM, in which case you should probably wait.

s1977 said:
Try disconnecting the battery. I assume that you are not midway flashing some OS or ROM, in which case you should probably wait.
Click to expand...
Click to collapse
No...i wanted to flash the stock rom of google but my device was not found by fastboot. I restarted my pc with the device still in bootloader and whilst being connected to the pc.
Pc didnt want to start up properly so i had to disconnect the USB connection.
Think my pc wanted to read from the internal memory of the phone or something.
Does this change your advice ? (hopefully not..)

Resetting the phone by taking out the battery shouldn't be a problem if you havent started flashing the new rom. I would try again after confirming that the fastboot and usb drivers can see the device before proceeding any further.
You can use fastboot devices to list attached devices. Only progress further once you can see your phone using the above command.
I did the same today a few hours ago and in my case, I started the phone in bootloader mode via Volume up + down + power button or via adb reboot bootloader. Then with fastboot, issue the fastboot oem unlock command to unlock the bootloader first. Once done, then you can flash the stock image (bootloader, radio and rom) with the following commands.
fastboot flash bootloader <bootloader image>
fastboot reboot-bootloader
fastboot flash radio <radio image>
fastboot reboot-bootloader
fastboot -w update <rom image>
Don't forget to lock the bootloader once done using fastboot oem lock
Just to clarify, depending on the version of the OS on your client PC/Mac/Linux, there are variants of fastboot. I use fastboot-mac from my mac.

Hi thanks for the post s1977. One thing I would like to clarify. I am currently on a yakjuzs build. I am going to move over to a "pure" yakju build (currently on yakjuzs 4.0.1, new build will be yakju 4.0.2). I have already unlocked bootloader and rooted phone. If I were to perform this update, I know I do not need to perform fastboot oem unlock (which I know wipes the internal storage) but will the flashing of the new bootloader wipe the storage as well, or will it just update it?

[Q] Is my phone brick? stuck on google boot image

I am not a noob when it comes to android dev, but this has stomped me and I am asking for expert's help. I have a GSM version SGN that I flashed the official yakju ICL53F on it via fastboot. It has been working great for a month now. Suddenly today I felt it was vibrating in my pocket, took it out and discover it was stuck in boot loop--the google sign with the unlocked icon. I waited til I get home to put clockworkmod on it, but when I try to nandroid it first it gave me an error. Then I figure I would just fastboot the stock rom on it again, using fastboot mode like I did before. I even flashed the bootloader, radio, and system image. Still stuck on google icon with screen went blank, vibrate and repeat. Is there anything else I should try? odin mode is also available, but I am not seeing any instructions on it at the developer section so I am reluctuant to try it. I can still adb and fastboot to access my phone...help please?

well I am no noob but I am no expert either. Apparently you cannot
fastboot flash system XXXXstock_image.img, you have to use
fastboot update -w XXXstock_image.img instead.
still I am baffled by why this happened in the first place. I was ready to lock the bootloader back up and send it in for warranty...glad I didn't have to resort to that.

lettcco said:
well I am no noob but I am no expert either. Apparently you cannot
fastboot flash system XXXXstock_image.img, you have to use
fastboot update -w XXXstock_image.img instead.
still I am baffled by why this happened in the first place. I was ready to lock the bootloader back up and send it in for warranty...glad I didn't have to resort to that.
Click to expand...
Click to collapse
I think you are mixing some things up.
The "update" parameter of fastboot is used to flash a group of images inside a zip file to you device.
The "flash" parameter is used to flash a single image to your device.
The following two groups of commands do the same thing:
fastboot update -w image-yakju-icl513f.zip
or
fastboot flash system system.img
fastboot flash boot boot.img
fastboot flash userdata userdata.img
fastboot flash recovery recovery.img
fastboot erase cache

[Q] Wiped Nexus, new rom didnt work, have nothing to restore to.

So I'm an idiot. I deleted everything off my Nexus 7 then I was going to flash to a new ROM, didn't work, I don't know why but it won't install. I have nothing else to install, not any other ROMs and no backups. To make the whole entire thing worse, my Nexus wont connect to my computer. Before you say to reinstall the drivers or plug it into another computer, I have, I've tried everything and nothing works. So my question is; Am I screwed or is there somehow a way to install a new ROM (seems impossible) or put the stock ROM back on? I tried the adb sideload method but I was completely unsuccessful as well as every other method I've seen/could come up with. After trying weeks to get anything back on my Nexus 7 I'm just about ready to toss this paperweight in my drawer and forget abaout it

Which modes can you get into?
TWRP allows you to mount USB OTG. Try flashing something from there.
Press Thanks If I Helped You!
Sent from my dead Nexus 7 2013 LTE! ???

Yes, like aniket0317 wrote: if all else has failed, put a ROM on a flash drive, connect it with a USB OTG adapter, and use TWRP.
I've lately had trouble getting my N7 recognized while in recovery mode, though everything's fine while in the bootloader and Android. But with TWRP it's easy to mount external flash storage and install from that.

RecklessBrandon said:
So I'm an idiot. I deleted everything off my Nexus 7 then I was going to flash to a new ROM, didn't work, I don't know why but it won't install. I have nothing else to install, not any other ROMs and no backups. To make the whole entire thing worse, my Nexus wont connect to my computer. Before you say to reinstall the drivers or plug it into another computer, I have, I've tried everything and nothing works. So my question is; Am I screwed or is there somehow a way to install a new ROM (seems impossible) or put the stock ROM back on? I tried the adb sideload method but I was completely unsuccessful as well as every other method I've seen/could come up with. After trying weeks to get anything back on my Nexus 7 I'm just about ready to toss this paperweight in my drawer and forget abaout it
Click to expand...
Click to collapse
are you able to go into fastboot mode? if so you still have hope

kmaq said:
are you able to go into fastboot mode? if so you still have hope
Click to expand...
Click to collapse
I'm not allowed to post pictures yet but I believe I can get in fastboot mode and I am sure that I can get into ClockworkMod Recovery

RecklessBrandon said:
So I'm an idiot. I deleted everything off my Nexus 7 then I was going to flash to a new ROM, didn't work, I don't know why but it won't install. I have nothing else to install, not any other ROMs and no backups. To make the whole entire thing worse, my Nexus wont connect to my computer. Before you say to reinstall the drivers or plug it into another computer, I have, I've tried everything and nothing works. So my question is; Am I screwed or is there somehow a way to install a new ROM (seems impossible) or put the stock ROM back on? I tried the adb sideload method but I was completely unsuccessful as well as every other method I've seen/could come up with. After trying weeks to get anything back on my Nexus 7 I'm just about ready to toss this paperweight in my drawer and forget abaout it
Click to expand...
Click to collapse
RecklessBrandon said:
I'm not allowed to post pictures yet but I believe I can get in fastboot mode and I am sure that I can get into ClockworkMod Recovery
Click to expand...
Click to collapse
download the 4.4.4 image
go to fastboot mode, connect the usb cable to laptop/pc
open command prompt and go to the folder where you have extracted the 4.4.4 image
fastboot oem unlock
type flash-all.bat
if all goes well device should reboot (initally will take some time) if it took more time, reboot again into fastboot mode
this time you can try manually commands one by one
in the folder where you have extracted the 4.4.4 image you will fine "image-razor-ktu84p.zip", extract this zip file as well
execute the following commands one by one:
fastboot erase boot
fastboot erase cache
fastboot erase recovery
fastboot erase system
fastboot erase userdata
fastboot reboot-bootloader
fastboot flash bootloader bootloader-flo-flo-04.02.img
fastboot flash boot boot.img
fastboot flash recovery recovery.img
fastboot flash userdata userdata.img
fastboot flash system system.img
fastboot reboot
device should reboot and if it displays language screen then cool complete the wizard, reboot in to fastboot mode again to lock the bootloader
fastboot oem lock
fastboot reboot
and enjoy!!! do report back what happens.

fastboot -w update stockrom.zip

I'm a little confused on the instructions, also, as mentioned, my Nexus isn't recognized by my computer no matter what I try.

How does it appear in Device Manager? Have you downloaded and installed the drivers?
http://developer.android.com/sdk/win-usb.html

RecklessBrandon said:
I'm a little confused on the instructions, also, as mentioned, my Nexus isn't recognized by my computer no matter what I try.
Click to expand...
Click to collapse
in the fastboot mode, after connecting your device to laptop/pc,
if you type "fastboot reboot-bootloader" in the command prompt
what happens?

I am having the exact same problem, it was installing got stuck on "erasing userdata" for over 2 hours and now nothing will work except for fastboot, and some how the device locked itself again. Only thing i can get to is fastboot mode, the computer recognizes the device. When I try to unlock it, it gets stuck in "erasing userdata" I let it run over night last night hoping it would some how work with no luck. I am unsure of what to do. Is there anyway to install a factory OS without unlocking? Every guide I've searched for has me doing an fastboot oem unlock and then the tablet freezes on erasing userdata. Any help would be greatly appreciated. Thanks!

kmaq said:
in the fastboot mode, after connecting your device to laptop/pc,
if you type "fastboot reboot-bootloader" in the command prompt
what happens?
Click to expand...
Click to collapse
Reread your initial instructions, and it worked! Thank you so much!!!

[Q] [HELP] Bricked Galaxy Nexus (maguro)

Hello guys, a friend of mine has a galaxy nexus with some problems.
When I turn on the phone, it starts booting normally, but a few seconds after getting into "desktop" it starts popping up errors saying that the process as stopped.
I've already tried a few things, but without success. I'm running out of ideas and here I'm asking for your help.
Things I've tried:
-Boot into recovery mode and wipe all data.
The phone says that the operation completed successfully, but after rebooting the phone remains the same. All apps, wallpaper, lock screen, etc. It seems that nothing was changed by this process.
-Flash a original google ROM
Following the tutorials, the first step is to unlock the bootloader with fastboot oem unlock. The phone shows a confirmation asking if I want to unlock it, I say yes, and it shows "status: unlocked". But after rebooting the phone it is locked again!!!
I tried to flash the room without rebooting the phone after unlocking it,
Code:
fastboot flash bootloader bootloader-maguro-primela03.img
fastboot reboot-bootloader
sleep 5
fastboot flash radio radio-maguro-i9250xxla02.img
fastboot reboot-bootloader
sleep 5
fastboot -w update image-takju-imm76i.zip
The first command to flash the bootloader also says that completes successfully, but when I'm flashing the radio it will complain saying that the phone has the wrong bootloader version installed.
-Flashing via Odin
It fails when is flashing system.img to the phone
-Flash custom recovery - fastboot flash recovery recovery.img
The process completes "successfully" but when I boot into recovery mode, there is the original one and not the one I just flashed.
-emmc brickbug - partition scanner
I found this thread http://forum.xda-developers.com/showthread.php?t=1823918 and tried to run the partition scanner. As I can't have the phone on enough time to use adb shell, I tried to use this scanner via adb sideload but the phones returns an error when running it. (probably because it doesn't have busybox installed, not sure)
After trying all of steps above, the phone is still the same... nothing changed. Once, I managed to connect it to the pc as an usb storage device, and was able to copy some photos from the phone and deleted them. But after rebooting they were all there again. It seems that all write changes are not persistent.
I'm out of ideas now... Do you have any idea of what is the problem? Or any suggestion for me to try?
Thanks in advance

I believe that there is a script in the android SDK tools called flashall.bat which will reflash the kernel, bootloader, recovery, ROM ect. I'm not sure how to use it, but you could potentially try that

Hi, thanks for you suggestion, but unfortunately it didn't work.
I had a look at the flashall.bat script and it runs the same commands I run manually.
I think that the phone might have some hardware problem... Normally I would buy a new phone, but I'm trying to fix it because it is important for my friend and for me because it is challenging.
I guess that the next thing I will try, will be trying to run emmc_find_brick script by @hg42 via sideload

Try formatting /system and reinstall android. Power your device into bootloader mode. Make sure your device is unlocked. Also, make sure you have the factory image downloaded. After your device is plugged in into your computer, use this fastboot command: fastboot erase system. This will delete everything from /system. Also format /data and /cache: fastboot erase data and fastboot erase cache. After that, try installing the factory image again.

Nexus 7 - 2nd gen: update failed to Lollipop 5.1

HI everyone,
I updated "successfully" from Kitkat to 5.0.2 on my rooted (stock ROM) Nexus 7 second gen.
Unfortunately, when I tried to upgrade to 5.1 everything seem to be normal until the device rebooted and it went through the "update process". 3/4 the way through, the green droid went on his back and the "ERROR" message appeared.
I wiped the cache partition but that doesn't help. I tried to download the update in safe mode, but no success. I also find it odd that each time I reboot my device, I get a message from Android that it is "updating my apps".
If I didn't have any apps and a lot of data on my Nexus, I would wipe the device clean but I'd rather avoid this, if at all possible.
Is there a way to upgrade to 5.1 or reinstall 5.0.2 without losing everything?
Thanks

Michael Carleone said:
Is there a way to upgrade to 5.1 or reinstall 5.0.2 without losing everything?
Click to expand...
Click to collapse
No problem. As you rooted it before then presumably it is unlocked and equipped with custom recovery, so all you have to do is:
boot TWRP
connect PC
transfer data and APKs to PC
flash OS
If you don't have TWRP installed, then boot it like this fastboot boot twrp-3.0.2-0-flo.img

k23m said:
No problem. As you rooted it before then presumably it is unlocked and equipped with custom recovery, so all you have to do is:
boot TWRP
connect PC
transfer data and APKs to PC
flash OS
If you don't have TWRP installed, then boot it like this fastboot boot twrp-3.0.2-0-flo.img
Click to expand...
Click to collapse
Hi,
Thanks for the reply. I rooted with Kingroot. I don't believe I have a custom recovery. The bootloader is locked as shown when I boot into recovery mode.
I want to avoid transferring my data and APK files to my PC.
Should I assume there is no way of reinstalling the OS without wiping out the device?Also, there is no link in the above quote: fastboot boot twrp-3.0.2-0-flo.img

Since I got no other replies, I went and restored to factory image. I do have another question. I hope I get a better response there: http://forum.xda-developers.com/nex...a/nexus-7-2013-wifi-root-marshmallow-t3515072

Thanks for the reply.
Can we compare using fastboot flashing TWRP vs Nexus Root Tool Kit: http://www.wugfresh.com/nrt/? I ended up using this utility instead because it was pretty much one click and it didn't require command lines and for whatever reason, I found instructions using fastboot a bit confusing. Which method is better or has more advantages? I left my bootloader unlocked.
Incidentally, I think there was something wrong with my Nexus image. As a result, I did use Google's instructions on how to flash etc. the OEM image. Instructions weren't ideal but I managed to figure things out: https://developers.google.com/android/images
The instructions are here which I assume would be similar if I wanted to fastboot TWRP?
To flash a system image:
Download the appropriate system image for your device below, then unzip it to a safe directory.
Connect your device to your computer over USB.
Start the device in fastboot mode with one of the following methods:
Using the adb tool: With the device powered on, execute:
adb reboot bootloader
Using a key combo: Turn the device off, then turn it on and immediately hold down the relevant key combination for your device. For example, to put a Nexus 5 ("hammerhead") into fastboot mode, press and hold Volume Up + Volume Down + Power as the device begins booting up.
If necessary, unlock the device's bootloader by running:
fastboot flashing unlock
or, for older devices, run:
fastboot oem unlock
The target device will show you a confirmation screen. (This erases all data on the target device.)
Open a terminal and navigate to the unzipped system image directory.
Execute the flash-all script. This script installs the necessary bootloader, baseband firmware(s), and operating system.
Once the script finishes, your device reboots. You should now lock the bootloader for security:
Start the device in fastboot mode again, as described above.
Execute:
fastboot flashing lock
or, for older devices, run:
fastboot oem lock
Locking bootloader will wipe the data on some devices. After locking the bootloader, if you want to flash the device again, you must run fastboot oem unlock again, which will wipe the data.
Click to expand...
Click to collapse
Also, I could've sworn that when I rooted KitKat on my Nexus, my data wasn't wiped out. I don't recall doing anything to the bootloader. I can't recall which method I used, but I know for certain I didn't use the Nexus Root Toolkit. I should've recorded my steps when I rooted.

i rooted my nexus 7 using towel root on kitkat .. i unrooted using supersu... and ota untill marhsmallow with out a problem never use kingroot as its so un stable.