Nexus 7 booting failed - Nexus 7 Q&A, Help & Troubleshooting

I need a lot of help with my Nexus. I have been trying my best to root it but it won't work using the Nexus Root Toolkit. So I decided to go try rooting it manually. When I did that the same problem was coming up which is it wouldn't let me flash anything on the device to give me root access. I decided to follow a guide to bring the version down to an older version and start over from there which I tried doing manually using windows command prompts. It told me to erse boot, cache, recovery, system, and then to flash the downloaded bootloader and version of android. When I got to the point where I had to flash the new bootloader my device froze while my computer was sending the file over which is what it did every time I tried to flash or send a file to the device using fastboot. I paniced and tried again using the Root Toolkit. It wasn't working either. Now my device is saying 'Booting Failed' which I assume is because of the fastboot erasing commands I did before. I am panicing because the new bootloader is still not sending over and I've been waiting for the past 10 minutes. The file size is only (2072 KB), I don't think it should be taking this long. Can anyone help me please?
http://forum.xda-developers.com/showthread.php?t=1773431&page=3
That's the guide I used to try and fix the first problem.

fix it by flash stock rom
Sent from my Nexus 7 using Tapatalk 4 Beta

jackjsa said:
fix it by flash stock rom
Sent from my Nexus 7 using Tapatalk 4 Beta
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i think your answer comes a little too late... i hope since he has posted this, he has find a solution :what:

Sorry to hear that!
Sent from my Nexus 7 using Tapatalk 4 Beta

Related

[Q] Restoring Stock Android on Nexus 7

Hi I have a problem with my Nexus 7 (32 gb wifi only version).
My son in his infinite wisdom decided to install ubuntu on the tablet.
I went to try and restore this back to the android version but all it did was to wipe off ubuntu itself
I then went on jayceooi.com and used the nexus toolbox to see if I could reflash the images etc.Howveer although all the files were downloaded I canot get the laptop to recognise the nexus itself (even though it sems to charge the tablet). There is no menu at all to check whether or not usb debugging is ticked or not..
Im now left with the tablet without no apparent operating system. At the moment all it shows is the green android with fastboot mode but when I hit start it says booting failed.
Could someone help please before I do any more damage and I brick it completly (although I may have already done so)
thankyou for any help
Use wugs tool in dev stickies and make sure right drivers are installed.
Sent from my Inspire 4G using xda premium
Gizmoe said:
Use wugs tool in dev stickies and make sure right drivers are installed.
Sent from my Inspire 4G using xda premium
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Click to collapse
thanks it mentions it being a root toolkit. I didnt actually want to root so is it still ok to use to restore back to stock android?
It can do more then just root
Sent from my Nexus 7 using Tapatalk 2
jswarb001 said:
thanks it mentions it being a root toolkit. I didnt actually want to root so is it still ok to use to restore back to stock android?
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Yes it can do restore back to stock. Just follow the guide to unlock bootloader so it can flash stock image then just re lock bootloader. It covers the process in op.
Sent from my Inspire 4G using xda premium
Ok thanks all. Seemed to be doing everything ok but its been stuck on"waiting for your device to finish booting back up" for about 30 minutes now. It did say it would take 5 to 10 mins but should i carry on waiting or abort and start again do you think?
thanks
I would reset it see if that helped
Sent from my Nexus 7 using Tapatalk 2
If your son re did the partitions for Ubuntu that could have messed things up pretty good. I have only had my nexus for a few days so I couldn't tell you how to fix the formatting quite yet. I would search around on how to verify and correct the partitions if needed.
Sent from my Inspire 4G using xda premium

Have I totally bricked my Nexus 7?

Hi,
Regretting this now but was trying to try out a different ROM after a long day so probably missed a step somewhere....
The situation now is that following normal procedure, my Nexus was wiped of user data, new ROM zip file copied across and loaded using recovery mode. After that, it had some error setting permissions with the new ROM and did not install properly (loaded but blank screen, apps, settings etc would not load).
I tried the process again and the same result, but now, I cannot even get adb working, the device is coming up simply as an unknown device and I cannot force install the google usb driver to get adb working again - so now I cannot even copy stock across to the Nexus.
My question is, without adb working now, have I fully bricked it or can someone point me in the right direction?
Thanks
If you can get into boot loader you can fix it.
Home power up and down
Sent from my Nexus 4 @1.5 GHz on Stock 4.2.1
Update ur SDK to get adb working..I faced it for 4.2.2
Sent from my Nexus 7 using xda app-developers app
IRX120 said:
If you can get into boot loader you can fix it.
Home power up and down
Sent from my Nexus 4 @1.5 GHz on Stock 4.2.1
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To elaborate a little, you'll want to get into the bootloader using the method quoted above, and then use fastboot (or nexus toolkit) to flash a stock image.
Thanks guys, managed to recover back to stock via fastboot and the command line just now .... this will teach me never to try flashing any ROMs when half asleep!
Thanks again :good:

[Help Needed] Infinite Bootloop on Nexus 4

I have a N4 which was unlocked and rooted after updating to 4.3. I figured, I'd give Franco Kernel a shot so I proceeded to download the Franco Updater from Google Play.
Selected automatic flash and reboot and now it's stuck in a perpetual boot state. I attempted to proceed with a hard reset through the recovery mode; using ClockworkMod Recovery. I wiped my data, cache and dalvik cache and then went on to reboot system.
Up till' now, my N4 is on the boot Google screen. I tried doing the above steps multiple times but the results remain the same.
I'd appreciate if any help is directed on how I would be able to reset my device to factory settings. I don't mind going through the unlocking and rooting process again; I just need it to get through the boot screen
Go to the bootloader and run this tool: https://developers.google.com/android/nexus/images#occamjwr66v
It works every time.
Something went wrong with the flash for sure, I can tell in many ways so wiping will not help anyway unless you flash an other kernel.
This will wipe EVERYTHING so I don't know if it is worth flashing or flash an other kernel, you choose.
Sent from my Nexus 4 using Tapatalk 4 Beta
andyabc said:
Go to the bootloader and run this tool: https://developers.google.com/android/nexus/images#occamjwr66v
It works every time.
Something went wrong with the flash for sure, I can tell in many ways so wiping will not help anyway unless you flash an other kernel.
This will wipe EVERYTHING so I don't know if it is worth flashing or flash an other kernel, you choose.
Sent from my Nexus 4 using Tapatalk 4 Beta
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Alright so I've downloaded the necessary file from your link, how do I go about running it? I apologize if this is a silly question to surface.
omgzam said:
Alright so I've downloaded the necessary file from your link, how do I go about running it? I apologize if this is a silly question to surface.
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Make sure it is Mako/Occam.
What ever android version you chose extract the file twice until you get to the contents and run flash_all.bat, if the script says that you are missing the Fastboot file you have to get it from the SDK.
Make sure your device is on the bootloader which is unlocked.
Sent from my Nexus 4 using Tapatalk 4 Beta
andyabc said:
Make sure it is Mako/Occam.
What ever android version you chose extract the file twice until you get to the contents and run flash_all.bat, if the script says that you are missing the Fastboot file you have to get it from the SDK.
Make sure your device is on the bootloader which is unlocked.
Sent from my Nexus 4 using Tapatalk 4 Beta
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I'm guessing this doesn't work on Mac? Because I'm currently on my Mac machine at work. If it's only for Windows, I gotta try it when I get home later.
omgzam said:
I'm guessing this doesn't work on Mac? Because I'm currently on my Mac machine at work. If it's only for Windows, I gotta try it when I get home later.
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Click to collapse
There is .sh has well which should work on Mac BUT you have to go though a lot with drivers.
FACT: Google Developers use Mac.
Sent from my Nexus 4 using Tapatalk 4 Beta
andyabc said:
Go to the bootloader and run this tool: https://developers.google.com/android/nexus/images#occamjwr66v
It works every time.
Something went wrong with the flash for sure, I can tell in many ways so wiping will not help anyway unless you flash an other kernel.
This will wipe EVERYTHING so I don't know if it is worth flashing or flash an other kernel, you choose.
Sent from my Nexus 4 using Tapatalk 4 Beta
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Click to collapse
Just to be clear, this solution is just to flash your device back to stock.

Trying to install 4.3 but can't manage it.

Hello forgive me if this is the wrong place on this forum for this topic.
I unlocked my phone with the wugfresh method and did keep it stock ROM. Now my sweet google phone wants to update OTA but it won't do it.
Can someone help me. I want to go 4.3 and keep it stock, and rooted: )
Sent from my Nexus 4 using xda premium
Do it manually by downloading the Google factory images and flashing them yourself. Can either flash them through a toolkit like I did (which most people wouldn't recommend), or you can flash them yourself with fastboot. A quick search or look around will show you how to do it
Sent from my Nexus 4 using Tapatalk 4
Do you mean that selecting the download/install button will not do anything?
Did you install a custom recovery?, you need a stock recovery for it to work, I have the stock recovery image itself if you need it.
Sent from my Nexus 4 using Tapatalk 4
Indeed de download/install button didn't do anything. I have custom recovery twrp on it.
I did downloaded the nexus 4 image and unpacked it. And tried to install true a toolkit but with no luck.
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ow godd im now stuck at the bootloader with no image on it. i tried it with a toolkit but with no succes. it whiped my device but didnt install image or rom.
im now stuck at the bootloader when i say start it just shows a black screen. have to reset the device 10 hold the power button.
im a bit flipping here
please help
bmwsensation said:
Indeed de download/install button didn't do anything. I have custom recovery twrp on it.
I did downloaded the nexus 4 image and unpacked it. And tried to install true a toolkit but with no luck.
Sent from my Nexus 4 using xda premium
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Use this with your phone in bootloader mode: https://developers.google.com/android/nexus/images#occamjwr66v
Sent from my Nexus 4 using Tapatalk 4
still trippin and want to use my whatsapp
i guess the google image isnt on the sd card anymore. how do i put the google image on the sd card.
i am using the wugg fresh method now
Use fastboot to flash the image from your computer. Efrant has a guide for returning to stock in General.
This, yet again, is why people shouldn't use toolkits.
gues thanks my nexus is back alife with the post in the general, id managed it. thanks guys.
this method brings me some old dos memories back :highfive: hhehe was fun afterwarts
now running stock again with 12gb memm

Grouper bricked after latest 4.3 OTA, no recovery

Heya...
On my 16GB Grouper I had installed the stock rooted 4.3 rom. Yesterday a system OTA update message appeared on my screen - 1.7 MB. I let it download and install over night and just went to bed. Came back in the morning to a boot loop where the device got stuck with the four colorful thingies animation. I can access the bootloader, but the recovery seems to be broken. Can't remember if I had anything other than the stock one... Anyways, now I'm strugling to get this thing going again. I am a zero at ADB but willing to learn whatever is necessary to get me started with a working recovery at least. No tool root box will do anything really for me...
Thanks for your help in advance
Hey!
Had a problem just like yours. If your running windows then install this program its called nexus tool kit. I'm a newbie here but if you Google 'nexus toolkit wug fresh' you can find it
All you need to do is plug your device in and open the program, then select flash OTA with the boot loop option and then follow the on screen instructions
That should put you back to normal with a fresh start meaning all you data will be lost. You can also root from there to.
Sent from my Nexus 7 using xda app-developers app
hettige677 said:
Hey!
Had a problem just like yours. If your running windows then install this program its called nexus tool kit. I'm a newbie here but if you Google 'nexus toolkit wug fresh' you can find it
All you need to do is plug your device in and open the program, then select flash OTA with the boot loop option and then follow the on screen instructions
That should put you back to normal with a fresh start meaning all you data will be lost. You can also root from there to.
Sent from my Nexus 7 using xda app-developers app
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Yeah. It would be dumb to actually learn what you are doing to your device. You should totally use a toolkit.
/s
Sent from my Galaxy Nexus
Honestly, I'm just showing the user one way, I anticipated him of being a newbie. For the record, it shows you all the process's happening.
Sent from my Nexus 7 using xda app-developers app
Thank you guys. You might not believe it, but I'm not a newb to Android or flashing. It's just that I've always been playing around with Samsung devices and there you'd normaly turn to Odin in case something went wrong. Here it's different.
Anyways, with this comprehensive guide I've been able to reflash a recovery image and my old rom. Unfortunately losing all of my data in the process, but there was no way to save it.
http://www.androidupdate.us/recover-bricked-device-fastboot/
In case this happens to anybody else.
Cheers

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