My Nexus 7 2012 WiFi 4.4.2 started acting flaky a couple of weeks ago, randomly shutting down,etc. Anyway, it finally got to the point that I decided to just go back to factory settings. This resulted in it not booting past the "Google". Long story short I am now at the point of trying to flash it from my PC.
Nothing I do will get it to unlock the bootloader. I'm not even sure why I'm posting this as I have read every thread on this and nothing works, I just find myself going in circles. I have also read where one does not have to unlock the bootloader to flash it, but I have come to the conclusion that is just not so. Or at least I have not found a post that describes how to do that. When I try to unlock it it say in the upper right on the device "unlocking bootloader......" That's it.
I should also mention that I don't remember if USB debugging is on or off. Of course it dosn't matter 'cause I can't set it now anyway.
So I guess my question is, could there be a hardware issue that would put it in this state? I hate to just drop it in the trash without doing due diligence.
-Jim
Hey guys,
I've got a device from a friend with the exact same problem.
I would like to try to flash stock fresh with the nexus tool kit.
The problem is, this old nexus 7 (2012) is still with a locked bootloader.
I cannot start the device, it won't go past "Google", I can access fast boot, and the Toolkit can find the device and all.
I also get the "Unlocking now..." in the top left corner after I accepted the unlock with the power button, the device shuts down a few seconds later. According to the Nexus Toolkit I need to boot the device and finish the unlock in the developer options, and there goes my problem... I cannot start and finish the script as the device is not booting at all, apart from the fastboot ofc.
Is there ANY way to unlock the device without being able to boot up the device?
One more thing, when the Nexus toolkit sent a restart command, the device will just shut down, I have to start it manually again.
Related
As a previous user posted here http://forum.xda-developers.com/showthread.php?t=1899024&page=172 I'm also having the same problem as he where the geen circle is revolving around the android in a loop. It only once completed the boot process but I only had a black screen with no choices to make. Since then, it only loops with the circle around the android. The tablet will not boot into recovery using all the options I've read on the forum and elsewhere. I used the JROMFlasher as noted [I usually use the Nexus 7 Toolkit]. Went through all the steps as indicated and loaded the SmoothROM. It only loops and the author really didn't answer the poster's question on how to get out of the loop. He just sadi to use the JROMFlasher. Trying to boot into Fastboot with the JROMFlasher only asks me if the device is turned on/plugged in. Pressing the Boot into Recovery tells me the same. I'm able to boot into the screen to choose power off/recovery/and restart bootloader. Only the restart bootloader and power off works, so I've powered off for the time being until I'm able to get the tablet "unbricked." I've previously used various ROMs on this site without incident using both JROMFlasher but mostly the Nexus Toolkit, except for this one incident where I've run into problems. It looks as if this problem is permanent on my tablet.
Well I managed to actually connect to the device and I can see the folders in Windows 7, but they're all empty, no system files, nothing, only the SmoothROM zip file I managed to get on the device yesterday befoe I began having problems. JROMFlasher cannot see the device, and niether can the Nexus 7 Tookit, so I guess I have a completely POS on my hands as of this minute. The looping is still there on the animation screen, but that's all I see. Time to power off this POS and send it to the trash. Don't think I'll be rooting any more devices.
Hi all,
First time posting on here (but I read the forums often - for guides etc).
Bought the Nexus 4 and I unlocked the bootloader and rooted the device. Kept to the stock Android (JB 4.2) however I locked the bootloader again.
The boot loop occurred after a restart after I did the following things:
1. Used Battery Calibration to calibrate the battery. Left the battery to drain and then charge to 100%.
2. Used VM Heap to change the amount and restarted the phone. Boot loop ocurred.
I have tried many things after reading this forums and other forums but there seems to be no answer to this issue.
Things I've tried are:
1. Booted into recovery mode and wipe data/factory reset many times - still has boot loop
2. Used Nexus Root Toolkit and tried the various functions on there. Fastboot doesn't detect the device (even though its in fastboot mode) in order for me to unlock the bootloader again and flash it with the stock ROM. Windows (8) does detect it but can't load drivers for it. Been through all the instructions on the Nexus Root Toolkit - reinstall drivers, cleared the device from device manager, cleared it from usb list etc. Fastboot just won't detect it to allow me to unlock!!
3. Let the battery drained and tried factory resetting but doesn't work (not tried fully charging it and then resetting though)
4. Been trying various other things which I read on the forum(s) but nothing seems to work!:crying:
Literally spent the whole day trying so many different things. Seems like I discovered a whole new unique problem to causing boot loop on the Nexus 4. I don't want to have to send this back to Google for a replacement if they give me one - hopefully with the locked bootloader and the data cleared, they won't know I've rooted, not to mention its micro-sim and my backup feature phone doesn't take micro-sim :crying:
Has any one had this issue before and fixed it!? Would really appreciate the help/guidance!
My first time rooting a phone, didn't do it before on other phones because thought knowing my luck I'd brick it beyond repair! Luck would have it, that exactly what has happened.
Appreciate the replies and help on this!
ThuanBui said:
Hi all,
First time posting on here (but I read the forums often - for guides etc).
Bought the Nexus 4 and I unlocked the bootloader and rooted the device. Kept to the stock Android (JB 4.2) however I locked the bootloader again.
The boot loop occurred after a restart after I did the following things:
1. Used Battery Calibration to calibrate the battery. Left the battery to drain and then charge to 100%.
2. Used VM Heap to change the amount and restarted the phone. Boot loop ocurred.
I have tried many things after reading this forums and other forums but there seems to be no answer to this issue.
Things I've tried are:
1. Booted into recovery mode and wipe data/factory reset many times - still has boot loop
2. Used Nexus Root Toolkit and tried the various functions on there. Fastboot doesn't detect the device (even though its in fastboot mode) in order for me to unlock the bootloader again and flash it with the stock ROM. Windows (8) does detect it but can't load drivers for it. Been through all the instructions on the Nexus Root Toolkit - reinstall drivers, cleared the device from device manager, cleared it from usb list etc. Fastboot just won't detect it to allow me to unlock!!
3. Let the battery drained and tried factory resetting but doesn't work (not tried fully charging it and then resetting though)
4. Been trying various other things which I read on the forum(s) but nothing seems to work!:crying:
Literally spent the whole day trying so many different things. Seems like I discovered a whole new unique problem to causing boot loop on the Nexus 4. I don't want to have to send this back to Google for a replacement if they give me one - hopefully with the locked bootloader and the data cleared, they won't know I've rooted, not to mention its micro-sim and my backup feature phone doesn't take micro-sim :crying:
Has any one had this issue before and fixed it!? Would really appreciate the help/guidance!
My first time rooting a phone, didn't do it before on other phones because thought knowing my luck I'd brick it beyond repair! Luck would have it, that exactly what has happened.
Appreciate the replies and help on this!
Click to expand...
Click to collapse
I'm having the same problem!
For the toolkit to see the device, you need to put your device to fastboot mode by pressing vol (-) and then the power button (the phone should be in powered off mode to do this).
andr0idfreak said:
For the toolkit to see the device, you need to put your device to fastboot mode by pressing vol (-) and then the power button (the phone should be in powered off mode to do this).
Click to expand...
Click to collapse
I've done this many times but still no luck
ThuanBui said:
I've done this many times but still no luck
Click to expand...
Click to collapse
I had a boot loop issue. It was stuck on Google logo - the white logo.
I couldn't go into recovery either.
My fix was to flash the stock recovery.IMG
I too couldn't detect the device however I kept trying.
If you face a problem getting into fast boot mode try pressing vol up + vil down + power. Didn't work for me but worked for some.
Let me know how it goes I'm glad to help out if I can
Having USB Debugging ticked WHILE IN ANDROID has absolutely no effect on whether or not your computer can see the device WHILE IN RECOVERY OR FASTBOOT.
monkeying. around said:
I had a boot loop issue. It was stuck on Google logo - the white logo.
I couldn't go into recovery either.
My fix was to flash the stock recovery.IMG
I too couldn't detect the device however I kept trying.
If you face a problem getting into fast boot mode try pressing vol up + vil down + power. Didn't work for me but worked for some.
Let me know how it goes I'm glad to help out if I can
Click to expand...
Click to collapse
Didn't fix it in the end...no matter what I tried. I got a replacement from Google (thankfully they didn't charge me for the new one!).
BTW the batch of Nexus 4 released in end of Jan/early Feb has a much better battery life than the one I got from the batch released in early Dec. Won't be rooting the new Nexus 4 in case sh*t happens again but no doubt will get tempted again somewhere down the line!
Thank you to everyone who replied!~ :good:
sideloading 4.4.2 and stuck on boot loop
ThuanBui said:
Didn't fix it in the end...no matter what I tried. I got a replacement from Google (thankfully they didn't charge me for the new one!).
BTW the batch of Nexus 4 released in end of Jan/early Feb has a much better battery life than the one I got from the batch released in early Dec. Won't be rooting the new Nexus 4 in case sh*t happens again but no doubt will get tempted again somewhere down the line!
Thank you to everyone who replied!~ :good:
Click to expand...
Click to collapse
bro mime nexus 4 has stuck into boot loop after upgrading from 4.4 to 4.4.2 .i was sideloading the zip dont know whats the issue ......i was rooted but went to stock via nexus roottool kit to get OTA . any suggestion
joshnichols189 said:
Having USB Debugging ticked WHILE IN ANDROID has absolutely no effect on whether or not your computer can see the device WHILE IN RECOVERY OR FASTBOOT.
Click to expand...
Click to collapse
all you got to do is download the toolkit and flash the software your phone is using and put it in fastboot and begin
:good::good::good::good::good::good::good:
So I have a nexus 10 32gb that I got yesterday that I updated to 4.4.4 and I wanted to root it so I could get some apps that I love to use. Here's what happened:
Everything was going smoothly with nexus root toolkit. I set up adb and all of the drivers. Everything with that was working and I made sure to check nexus 10 with 4.4.4 in the drop down. I press the unlock bootloader button and the device says it's going into bootloader mode, but it just goes to a black screen. Then a message pops up saying I have to factory reset if i'm on 4.4.4, but that never shows up on the tablet, so I just hit OK. Then the device supposedly reboots, but now it's stuck in a bootloop and whenever I hold down the buttons to go into the bootloader the screen will turn black and the device will vibrate once after I hold the buttons for a while, then it tries to reboot again and gets stuck bootlooping. Then I try the factory reset method through the nexus root toolkit, but fastboot fails to see the device since I can't get it into the bootloader! It also doesn't show up as the correct device when it is bootlooping and connected to my computer.
Am I scewed if i can't get to the bootloader? I don't know what went wrong. I just got it yesterday and assumed it would be super easy to root since it's a nexus device. :'(
Any help/ suggestions would be great.
You are correct, nexus devices are super easy to root especially without a toolkit, most rooting issues I've seen on any nexus device has been due to the use of a toolkit so I would advise not to use it.
Currently you need to get into bootloader so you can flash a custom recovery with fastboot and then flash ROM of choice from there
Try adb reboot bootloader while in bootloop but I have a feeling this won't work. So if not try powering on holding volume down, even try with volume up, just keep trying button combos to get it to boot into bootloader.
For further help try here
http://forum.xda-developers.com/showthread.php?t=2670400
But keep trying to get into bootloader
Sent from my Nexus 4 using XDA Premium 4 mobile app
Try power and both volume buttons at the same time if you haven't already.
sfobrien said:
Try power and both volume buttons at the same time if you haven't already.
Click to expand...
Click to collapse
I have actually been trying that. I just let it die while it was bootlooping, so hopefully when it gets a little charge I can try to get it to go into the bootloader again. I have a feeling there's a bigger issue than that though.
Nexus 7 (2012)
4.4.4 Stock
KTU84P
HW Version - ER3
Bootloader Version - 4.23
Locked Bootloader
Not Rooted
I have a Nexus 7 sitting in front of me that was dropped off by my aunt in hopes that I could repair it for her. It doesn't look too promising, but I thought I'd consult the mighty fine people here on XDA before I give her the bad news. Here's what she says happened. Yesterday, while preforming day to day activities on it (browsing internet, Skyping, Facebook, etc), the device completely froze. After holding down the Power Button and forcing it to shutdown, she booted it back up. Everything seemed to functioned properly for about 30s - 1min when, at that time, the device turned off and rebooted on its own. After booting back up, it started to repeat this cycle. Basically getting stuck in a bootloop. I personally have never witnessed a bootloop like this before, where the device successfully boots up completely into the OS before turning off and repeating. I'm more used to dealing with ones where it might go as far as the manufacturer logo and then repeats. So anway, as I stated, I only have a 30s - 1min window where I can make changes in order to troubleshoot. The first thing I figured I should do was to go into "About Device", turn Developer Mode on and get USB Debugging enabled. I was able to do this and used "adb devices" to confirm its connection to my computer before it looped again. After its next bootloop I headed back into settings because I wanted to take note of the Android version she was running. As I was navigating there, I noticed that the Developer Options were no longer active. Basically as if I hadn't enabled them yet. This made me start thinking that changes being made on the device weren't sticking. I decided to make a few visual changes to the home screen and see if they were still there after the next bootloop. I uninstalled an app, rearranged icon placement, and changed the wallpaper. Once it shutdown and booted back up again, everything was back to the way it was before the changes had been made. The app I had uninstalled was still there, the wallpaper reverted back, and the icons were back in their original location. At this point I decided to see if I could reboot into Safe Mode. Unfortunately, this doesn't work. I am able to get the reboot to Safe Mode confirmation box and tap "Ok" but it remains in Normal mode when it boots back up. I eventually tried to boot into recovery and preform a Factory Reset. I was able to get into recovery and reset the Nexus. Or so I thought. Instead of seeing a Device Setup screen after it wiped, like I assumed I would, it booted up and still had all the data on it. There were no errors during the wipe and it was confirmed with "Data wipe complete." afterwards.
I am absolutely lost. I've never dealt with such an unusual issue before. Especially with it not even reacting to a complete data wipe. So, just to recap . . . I only have 30s - 1min available to interact with the OS before it reboots itself, any changes made during that time don't stick, Device is successful booting into Stock Recovery, and I can successfully get a Fastboot connection when booting to the Bootloader.
Luckily she has come to terms that this might not get fixed and has decided to go a head an order a newer 2013 model. I'd still like to try any solutions that you all might have. Just in case there is a slight glimmer of hope.
Oh, and one last thing I should mention. I tried to see if I could get the bootloader unlocked but it didn't work. This is the first Nexus I've ever had in my possesion, so I'm not really familiar with the tools available for it. I found WugFresh's Root Toolkit and attempted to Unlock with it. The process seemed to go as it should and I didn't receive any errors on the tablet or in the software. However, in the end, it didn't make any changes to the bootloader.
same problem
I have the same problem as you.
Did you find a solution?
Can anybody help us?
Thanks.
I have a similar problem, but I think mine is related to the bootloader.
I'm stuck on 3.34 and that's where it fails ever time I try Wug's Nexus Tool Kit.
Have you tried Nexus Tool Kit yet?
eawooten said:
I have a similar problem, but I think mine is related to the bootloader.
I'm stuck on 3.34 and that's where it fails ever time I try Wug's Nexus Tool Kit.
Have you tried Nexus Tool Kit yet?
Click to expand...
Click to collapse
I have tried factory reset from recovery, no errors while wiping but when device restarts nothing has happened: I only have a 30s-1min of old system with all my data and apps or directly bootloop.
Also I have tried flash factory images with Nexus Tool Kit and directly from bootloader. No errors while flashing, apparently has flashed new image system. When device restarts nothing has happened: bootloop or my old system with data and apps for 30s before restart.
Myself and a few others are having the same problem... please keep us updated if you find anything out.
http://forum.xda-developers.com/showthread.php?t=2588911
I am in need of serious help! I dropped my phone off a 2nd story, smashed the screen completely. So I took my wife's old stylo 2 plus (exact same phone) stuck my Sim and SD into it, registered through metro pcs, and it worked great.
I did software update because I was really excited (my old stylo 2 was rooted and had many problems along with being unable to update android software).
Update took about an hour, then said failed. After that it has been unable to boot up. I tried recovery mode, it offers to factory reset. Again reboots and stuck at logo screen. Says error device is corrupt, cannot be trusted, will not boot. I press power it says press power again to boot anyway. Restarts and sticks at logo screen. Device is basically untouched. No oem unlock, no debugging, no developer options, nothing has been touched ever, the phone is 100% stock. I even did factory reset before I started using the phone.
Can someone please help me at the least flash trip so I can fix this??
I am not new to this, but has been 5 years since I flashed anything. The problem is, is that it's still locked, and can't boot up. The phones bricked and never been touched!
If I can get twrp flashed I can go from there, I need a way to unlock it, or flash without unlocking.
Please help me I need my phone for work. I'd rather not switch back to an old smashed screen
Cecil12 said:
I am in need of serious help! I dropped my phone off a 2nd story, smashed the screen completely. So I took my wife's old stylo 2 plus (exact same phone) stuck my Sim and SD into it, registered through metro pcs, and it worked great.
I did software update because I was really excited (my old stylo 2 was rooted and had many problems along with being unable to update android software).
Update took about an hour, then said failed. After that it has been unable to boot up. I tried recovery mode, it offers to factory reset. Again reboots and stuck at logo screen. Says error device is corrupt, cannot be trusted, will not boot. I press power it says press power again to boot anyway. Restarts and sticks at logo screen. Device is basically untouched. No oem unlock, no debugging, no developer options, nothing has been touched ever, the phone is 100% stock. I even did factory reset before I started using the phone.
Can someone please help me at the least flash trip so I can fix this??
I am not new to this, but has been 5 years since I flashed anything. The problem is, is that it's still locked, and can't boot up. The phones bricked and never been touched!
If I can get twrp flashed I can go from there, I need a way to unlock it, or flash without unlocking.
Please help me I need my phone for work. I'd rather not switch back to an old smashed screen
Click to expand...
Click to collapse
You need to download the kdz(device firmware) and flash it in download mode using lg up.
Sorry for the super long delay. I did what you said, and was able to use my phone again in no time. Thank you very much!
LG Stylo 2 Plus
Cecil12 said:
Sorry for the super long delay. I did what you said, and was able to use my phone again in no time. Thank you very much!
Click to expand...
Click to collapse
Hey would you be able to tell me which firmware worked or possibly even a link. I am having issues with getting one to work on the lg stylo 2 plus using lg up.