Develop Bugs

[Q] Nexus 7 stuck at Google logo and can't unlock bootloader

Hi all
Interesting issue that I've searched here and Google for and not getting far, my searching skills may not be the best though as I'm fairly new to this.
My Nexus 7 was working fine, put it on the side, came back and it's turned off. Thinking it's flat I charge it and try to boot it with no success. Pressing the power for a while does get it to turn on but it gets as far as the Google logo and stays there.
I've factory reset it in the recovery and nothing
I've tried to flash the stock image from Google but when unlocking the bootloader it just sticks on "yes" forever and nothing happens.
What can I do at this point?
Cheers

Acksaw said:
Hi all
Interesting issue that I've searched here and Google for and not getting far, my searching skills may not be the best though as I'm fairly new to this.
My Nexus 7 was working fine, put it on the side, came back and it's turned off. Thinking it's flat I charge it and try to boot it with no success. Pressing the power for a while does get it to turn on but it gets as far as the Google logo and stays there.
I've factory reset it in the recovery and nothing
I've tried to flash the stock image from Google but when unlocking the bootloader it just sticks on "yes" forever and nothing happens.
What can I do at this point?
Cheers
Click to expand...
Click to collapse
Have you heard of Wugfresh Tool kit ? (aka Nexus Tool Kit) It is in the development section or you can google it. It is quite famous.
It will do anything actually from drivers to repair a device stuck on google logo. Just make sure you select the correct option.
You will need unlocked bootloader to flash stock images. And to do either of those, you will need drivers!
Install drivers and use it to recover your device. If you still have trouble, quote me back and I will help you to my best of ability.
Look into the forum before posting your questions. There are so many similar problems and you can easily find a solution by reading their questions and their possible solution.
Good Luck!

I'm having issues with my nexus 7 (2013). It will not boot up,it's stuck on Google logo. I am able to put in fastboot mode. I'd like to do a hard reset/wipe but I cannot enter recovery mode; it just goes to the Google logo and doesn't show me the recovery menu. I thought I could try doing it through adb but bootloader is locked. Downloaded WugFresh toolkit but it requires correct build number, which I do not know. I tried different ones but everything fails. AND USB debugging is not enabled, but I cannot do it through my tablet because it won't pass bootloop. I haven't been able to enable it remotely. So, any help with getting this tablet up and awake?! It's not rooted BTW, its running stock 6.0 marshmallow

MGreen1216 said:
... issues with my nexus 7 (2013) ... stuck on Google logo. I am able to put in fastboot mode ... doesn't show me the recovery menu ... bootloader is locked. Downloaded WugFresh toolkit but it requires correct build number, which I do not know. I tried different ones but everything fails. AND USB debugging is not enabled, but I cannot do it through my tablet because it won't pass bootloop. I haven't been able to enable it remotely. So, any help with getting this tablet up and awake?! It's not rooted BTW, its running stock 6.0 marshmallow
Click to expand...
Click to collapse
Interesting, and troubling for you, I'm sure.
-- What do you mean, in fastboot it doesn't show you the recovery menu? If you are into (more properly) bootloader mode, the Recovery option has to be there. Do you mean you just can't select it, or that it won't work when you do select it?
-- Using fastboot, you might be able to boot into custom recovery without flashing it. (e.g. "fastboot boot twrp.img", not "fastboot flash recovery twrp.img".
-- Have you tried unlocking the bootloader via fastboot? Is it possible OEM Unlock is already/still enabled somehow?
-- Also.... Wug's NRT doesn't need the correct verion/build. The last option in the drop-down menu on the NRT is this: << Android *.*.* - Any Build >>
HTH

-- When i go into bootloader/fastboot mode, the option is there for recovery mode along with 'start' and 'power off',etc.. However, when I select it,it just hangs on Google logo and never shows me the Android man and recovery options.
-- Sorry, not sure what you mean by this: "Using fastboot, you might be able to boot into custom recovery without flashing it. (e.g. "fastboot boot twrp.img", not "fastboot flash recovery twrp.img"."
I may need some instructions on how to do this please.
-- I have tried unlocking bootloader via WugFresh and Nexus toolkit and via adb but it hangs on erasing user data and also hangs on 'unlock bootloader's screen (left it for over 12 hrs). I doubt anything is unlocked.
--Yes, I tried the "any build" option and nothing works.
Thank you
I'm open to any suggestions.

MGreen1216 said:
--- not sure what you mean by this: "Using fastboot, you might be able to boot into custom recovery without flashing it. (e.g. "fastboot boot twrp.img", not "fastboot flash recovery twrp.img"."
I may need some instructions on how to do this please.
Click to expand...
Click to collapse
Ah, right. I didn't read closely, and didn't realize you might not have used fastboot tools... and please, I'm no expert, so if I'm saying somthing inaccurate, I very much hope someone will correct me.
I'm never sure how much a poster knows, so I'm not sure if you meant you don't know fastboot commands at all, or just the specific ones I mentioned .. fastboot commands are like ADB commands, but run in the bootloader environment. We know you have fastboot commands installed and fastboot drivers installed on your computer because you have adb installed - which includes fastboot, and you said WugFresh's tool was able to run, which means you also have the right fastboot drivers (the NRT uses the same fastboot commands).
fastboot can be used to flash/install custom recovery packages, among a whole lot of other things. So what I mentioned in that command was a possible way to maybe get into a custom recovery if you have to do things like wipes or whatever, even if you can't actually fully install the custom recovery. You might need to do this stuff, if you can't unlock your bootloader and flash the whole official Google Factory Image from their website (which is what I'd try - simple instructions are right there, too).
Flashing the full factory image will wipe your device, of course, but there are simple ways around that, which you can find on this very forum. Good luck.
Let us know how you get on.
<<< Any device that's bootable at all is recoverable...... usually... >>>

Can the original firmware be reinstalled?

So i messed up when trying to update my watch and somehow deleted the firmware so my watch bootloops upon start-up, any way to fix this?

Im have the same problem. Im stuck in bootloop after trying to flash custom kernel. I can not rech recovery. Not original recovery or TWRP. Fastboot works. What to do?
Is there any restore image to flasH?

Here are three solutions in one answer, because you did not give quite enough info.
First, try holding the button on boot up. Hopefully that will get you into usb mode. If it works, download the sony software, and go to the help section, and download and install the update.
Option two,
Code:
adb reboot recovery
Or, download the version of twrp for your build as well as your original image, and use fastboot.
Code:
Fastboot boot twrp.img
then use twrp to install the factory zip. You can do this directly in fastboot too, but it is more difficult because fastboot only installs each image separately. If I knew what versions of software you had, I could help you find the images you need.

I have tried both fastboot flash and fastboot boot for both original recovery and also TWRP, but non of the recoverys will boot, not even with Fastboot boot.
The command lines says OK on my PC, It is getting downloaded, and it says it is booting / flashed [OKAY].
But all I get on my Smartwatch 3 is bootloop.
My Smartwatch 3 is OEM unlocked. I even tried to lock it, and unlock it again.
I have full contact with fastboot on my PC, all the commands are taken in and seems to work, but my smartwatch won't boot no system or no recoverys. Only USB-mode and Fastboot mode...
I have also tried to clear cache and userdata in fastboot after OEM Unlock.
I will try the Sony Software now. That is my last way out I Think.

The Sony PC Companion software from sony's website worked for me to save my smartwatch from bootloops . I just did a update and installed it over what was already on the smartwatch.
Thanks lekofraggle for quick answeres. I had no idea the PC Companion had this feature.

SimDroid, I am glad that helped. If it hadn't, the next step would be to flash an image through fastboot. That would be scary, because it sounds like your boot loader was corrupt. It's nice to know the usb and PcCompanion piece still worked. Another reason this watch is incredible.
Cheers.

does anyone have a download for the original (5.0.2 im guessing) ROM for this watch? I want off the rubbish 5.1.1 update before i am forced to sell the watch due to the terrible battery

The smartwatch works as it should now, original recovery and everything is back!
So, if i may go back to where it started?
I noticed now that I flashed the custom kernel for the watch built for wrong firmware. Im on 5.1.1, and there doesnt seem to be a developed shared kernel with all four cores unlocked for it.
Im also interested in where I can find those images to flash via fastboot as you mentioned lekofraggle

Nexus 5X Bricked Google logo loop - HELP

Nexus 5x h790 - Android 6.0.1
Some day he restarted and frozen in Google Logo. I just access the Bootloader Mode, recovery and Download mode don't run.
The problem is I can't into in Android settings, so I can't enter in developer options, OEM unlock is not allowed and USB debugging to. Because this I can't unlock my bootloader in Fastboot mode. I try use NRT but for solving my problem I need unlock my bootloader and my OEM is not activated.
Yesterday I read some topic that talking about let the device restart several times, for my surprise this worked and enter in the initiation process of Android, but is not everytime that works and is too longer to wait this miracle happens.
Please help me with this problem I don't know what I do now.
Sorry for my English I am from Brazil

Most likely you have a hardware problem.
You can try sideloading the FULL OTA using adb sideload and recovery, but you said you can't get into recovery. I am not sure if you can't get into recovery, ever, or just can't get in most of the time, but sometimes you can. If latter, try adb sideload of FULL OTA.
Bootloader is useless if you can't unlock it.
The last option is to use LGUP and the TOT file, but I think you mentioned not being able to get into download mode.
Keep in mind if you flash the TOT file, it doesn't come with a vendor partition, so it is likely you'll get some error during startup. What I would do is immediately go to developer options and enable OEM unlocking, then go to bootloader and unlock, then flash a full factory image that includes the vendor you need.
That's pretty much your options.

Pixel 2 xl brick after lock bootloader

HELP. (SOLVED)
Hi Guys, yesterday I have tried to lock my bootloader again on android 9, after not successfully security patch update, after I lock my bootloader the phone has erased all system, , I have downloaded the factory image from google site but every stock image I flash I get stuck in the google white screen, I can’t update by sideloading, because when I lock the bootloader all system gone.. I CAN ACCESS THE FASTBOOT MODE AND RECOVERY MODE phone stuck on boot screen with google logo help….. I have tried many stock images but same problem with all versions..
Also get he messege "Your device is corrupt. It can't be trusted and may not work properly.
Visit this link on another device: g.co./ABH
PRESS POWER BUTTON TO CONTINUE".
PLS HELP..

zetareticuli said:
HELP.
Hi Guys, yesterday I have tried to lock my bootloader again on android 9, after not successfully security patch update, after I lock my bootloader the phone has erased all system, , I have downloaded the factory image from google site but every stock image I flash I get stuck in the google white screen, I can’t update by sideloading, because when I lock the bootloader all system gone.. I CAN ACCESS THE FASTBOOT MODE AND RECOVERY MODE phone stuck on boot screen with google logo help….. I have tried many stock images but same problem with all versions..
Also get he messege "Your device is corrupt. It can't be trusted and may not work properly.
Visit this link on another device: g.co./ABH
PRESS POWER BUTTON TO CONTINUE".
PLS HELP..
Click to expand...
Click to collapse
You probably should look into this.
https://forum.xda-developers.com/pi...ol-deuces-bootloop-recovery-flashing-t3704761

With a locked bootloader, you cannot flash system images. You need to be unlocked to do so.
But it seems that you did something wrong when re-locking the bootloader: It is normal that a factory reset is performed, but the OS should stay on the phone.
So I would first unlock the bootloader again - both fastboot flashing unlock and fastboot flashing unlock_critical, like described here: https://developers.google.com/android/images
Also note that you always need to update the Android SDK Platform-Tools, like descibed in the link. As always: Those who can read do have an advantage
Then you should be able to flash the latest factory image again and are ready to go.

Badger50 said:
You probably should look into this.
https://forum.xda-developers.com/pi...ol-deuces-bootloop-recovery-flashing-t3704761
Click to expand...
Click to collapse
I couldn't dig myself out of a soft brick the other day too. That saved me as well. Worked like a charm the first time.

zetareticuli said:
HELP.
Hi Guys, yesterday I have tried to lock my bootloader again on android 9, after not successfully security patch update, after I lock my bootloader the phone has erased all system, , I have downloaded the factory image from google site but every stock image I flash I get stuck in the google white screen, I can’t update by sideloading, because when I lock the bootloader all system gone.. I CAN ACCESS THE FASTBOOT MODE AND RECOVERY MODE phone stuck on boot screen with google logo help….. I have tried many stock images but same problem with all versions..
Also get he messege "Your device is corrupt. It can't be trusted and may not work properly.
Visit this link on another device: g.co./ABH
PRESS POWER BUTTON TO CONTINUE".
PLS HELP..
Click to expand...
Click to collapse
Sounds like you may have made some changes to your partitions, then locked the bootloader.
I would unlock the bootloader again, and reflash all the partitions to factory.
Then lock bootloader again.

exist2resist said:
Sounds like you may have made some changes to your partitions, then locked the bootloader.
I would unlock the bootloader again, and reflash all the partitions to factory.
Then lock bootloader again.
Click to expand...
Click to collapse
SOLVED WITH [TOOL] Deuces Bootloop-Recovery & Flashing Script v4.4/v4.5
Thanks alot guys

mikelikesbikes said:
I couldn't dig myself out of a soft brick the other day too. That saved me as well. Worked like a charm the first time.
Click to expand...
Click to collapse
Thanks my friend works like a charm..

exist2resist said:
Sounds like you may have made some changes to your partitions, then locked the bootloader.
I would unlock the bootloader again, and reflash all the partitions to factory.
Then lock bootloader again.
Click to expand...
Click to collapse
Solved with [TOOL] Deuces Bootloop-Recovery & Flashing Script v4.4/v4.5..

Please, help me on lg g710ulm that stuck on fastboot

The lg g710ulm phone stuck on fastboot after update failure. The phone can't enter download mode, it just boot to fastboot mode when it is power on. Please, I need emmc firehorse loader to flash laf.img through edl mode or if anybody knows other unbricking method that I can use ; your suggestions is needed.
Sent from my HUAWEI TAG-TL00 using Tapatalk

I had a sort of similar issue while unlocking my bootloader today. I got to the part where you flash the A and B slots with the patched image, and upon reboot, both slots were seemingly unbootable. The way I got around it was to go into fastboot and boot the pre-rooted ULM image. (I can link it if you don't already have it.) That allowed me to boot all the way into Android. Not sure if it would work the same for your situation, but worth a shot since you're already in fastboot.

rhythm_dx said:
I had a sort of similar issue while unlocking my bootloader today. I got to the part where you flash the A and B slots with the patched image, and upon reboot, both slots were seemingly unbootable. The way I got around it was to go into fastboot and boot the pre-rooted ULM image. (I can link it if you don't already have it.) That allowed me to boot all the way into Android. Not sure if it would work the same for your situation, but worth a shot since you're already in fastboot.
Click to expand...
Click to collapse
Thanks for your reply, my own case is different because I can't access download mode talk less of Android menu. The phone only boot to fastboot mode (the fastboot is locked)
Sent from my HUAWEI TAG-TL00 using Tapatalk

Thanks for sharing but getting the phone emmc firehorse loader is the problem.
Sent from my HUAWEI TAG-TL00 using Tapatalk

Hello @aaya888 -- My G7 is stuck on the fastboot screen. Can you help me with fixing it so I can flash stock kdz again? I bought a G7ULM online, but turns out to be a Sprint phone that was cross flashed. It was not getting OTA updates. I tried flashing Pie on it using LGUP, but it errored at 74% and now my phone stuck on fastboot screen. I've tried some of the other methods found online, but so far no success. I was wondering if you could help guide me through fixing my phone with QFIL. I want to flash an unlocked stock Pie (like GFI unlocked) that will work on t-mobile with all bands.
If you can help out in any way, I would greatly appreciate it. Thanks.

Try using LG Bridge to restore your phone using "Update error recovery" link under the Software Update tab. First though you do have to get into download mode for this to work. Hold down your volume up button while the phone is plugged into your PC via usb cable.