Nexus 7 not booting.. - Nexus 7 Q&A, Help & Troubleshooting

Hi folks,
Typical newbie here.. i had my nexus 7 unlocked/rooted and flashed custom trinity kernel. All working great until i decided to apply the 720p video camera mod by going into the system/etc folder and editing the /system/etc/media_profiles.xml file directly. I thought I did it correctly and set the correct permissions but when i rebooted the nexus , i get the trinity boot screen for about 30 seconds, then a screen flash and then nothing.
I can reboot in clockwork recovery - but unfortunately I cant seem to be able to connect the nexus to a laptop we have her at work. I downloaded the nexus 7 toolkit and tried installing the windows 7 drivers but it failed. I'm not hoping when i get home and connect it to my own PC which already has the drivers it will recognise it and allow me to copy a zip file to the sd card so i can flash it.
I was also wondering if there is a way to completely reset the Nexus 7 without connecting it to a computer inside clockwork recovery?
Cheers,
Mick

Restore a backup in CWM? You do have a backup right? Or... assuming you have a ROM zip on there, you could wipe and reflash.

micks_address said:
Hi folks,
Typical newbie here.. i had my nexus 7 unlocked/rooted and flashed custom trinity kernel. All working great until i decided to apply the 720p video camera mod by going into the system/etc folder and editing the /system/etc/media_profiles.xml file directly. I thought I did it correctly and set the correct permissions but when i rebooted the nexus , i get the trinity boot screen for about 30 seconds, then a screen flash and then nothing.
I can reboot in clockwork recovery - but unfortunately I cant seem to be able to connect the nexus to a laptop we have her at work. I downloaded the nexus 7 toolkit and tried installing the windows 7 drivers but it failed. I'm not hoping when i get home and connect it to my own PC which already has the drivers it will recognise it and allow me to copy a zip file to the sd card so i can flash it.
I was also wondering if there is a way to completely reset the Nexus 7 without connecting it to a computer inside clockwork recovery?
Cheers,
Mick
Click to expand...
Click to collapse
did you mak a NANDroid of stock? or any nandroid for that matter? just restore one of those from cwm. if that doesnt work, just flash any rom you have on your tablety

afraid have neither a rom or nandroid backup... all good lessons learned.. will try from home and see how i get on..
redundant409 said:
did you mak a NANDroid of stock? or any nandroid for that matter? just restore one of those from cwm. if that doesnt work, just flash any rom you have on your tablety
Click to expand...
Click to collapse

got sorted, was able to use one of the tookits to 'push' an update.zip file to my nexus 7 and flash using clockwork recovery.. needless to say once back up and running i've since done a nandroid and rom backup and backed up all my apps with titanium backup... also flashed CM10 last night..
can i ask what's the most efficient way to use Titanium backup when flashing roms? If i take an apps/data backup.. is there any point taking a system data backup if i'm flashing a new rom?
Last night i flashed CM 10, then flashed gapps to get back into the play store.. then downloaded titanium backup, ran my apps + data restore and eveything was back as i wanted.. stuff from the homescreen had gone etc.. but i guess no way around that?
also how does backing up/restoring to google drive work with titanium backup?
cheers,
mick

Mine nt booting too
Well i also got ma nexus 7 today nd when I firstly tried to boot it up it didn't boot up instead rondom coloured line started to show up. I tried to boot into recovery but I wasnt able to do that.

Related

[Q] question about backing up stock rom.

K so I have searched the net for days about this, with no success. what I want to know is it possible to transfer a backup of a stock rom, from one tablet to another of the same kind for recovery? if so can you post instructions or a tut, I've lost my original due to currupt data. and I want my Dolby digital sound back.
acer iconia minimalist rom
edit: I do have access to another tablet running stock.
thundercub88 said:
K so I have searched the net for days about this, with no success. what I want to know is it possible to transfer a backup of a stock rom, from one tablet to another of the same kind for recovery? if so can you post instructions or a tut, I've lost my original due to currupt data. and I want my Dolby digital sound back.
acer iconia minimalist rom
edit: I do have access to another tablet running stock.
Click to expand...
Click to collapse
Using cwm do a full nandroid backup, transfer the backup to microsd, put the microsd into the other Iconia and use cwm to do a nandroid restore.
At least, that's my guess.
well that's a start, I was about to start ripping my hair out over this simple sound issue lol but thanks.
thundercub88 said:
well that's a start, I was about to start ripping my hair out over this simple sound issue lol but thanks.
Click to expand...
Click to collapse
Hmmmmm. Can't you use use a full update.zip and flash a copy of the stock rom? Never tried using a nandroid backup on a system it was not created on - it might work, but it might not, I really am not sure.
But just flashing a full update.zip or installing Acer recovery tool to flash a stock rom sounds easier and more likely to work to me - am I missing something and is this not an option?
I tried flashing two or three times before, sent it into a bootloop, I even tried the Acer update decrypter but my laptop is 32 bit, and until today when I finally decided to post the question is when it occurred to me about possibly transferring it. btw, is there a set destination for the nandroid back up?
thundercub88 said:
I tried flashing two or three times before, sent it into a bootloop, I even tried the Acer update decrypter but my laptop is 32 bit, and until today when I finally decided to post the question is when it occurred to me about possibly transferring it. btw, is there a set destination for the nandroid back up?
Click to expand...
Click to collapse
Nandroid backups go to the external SD by default (I think) - have you tried using Acer Recovery Installer on the tab with the issue? Assuming you can still boot it and have root you may be able to go back to stock using it.
acer recovery
Tonto the market. Download the new version of Acer recovery installer.install third recovery. Go back into Acer recovery got last box .choose a rom for your location.let it download then install.point and click simple and will fix your issue.if you have failed attempts. You might want to try a different SD card.good luck
This did work for me
.
Erica Renee
Urban geeky blonde like me can do it surely a strong man like yourself willnfigure it out. Giggles
I have tried Acer recovery installer as well, I have 2.3 in fact I tried just a moment ago, and I get boot screen with android the triangle and the exlimation point.
confusion
OK Acer recovery installer is not the recovery just a means to install and work within it and run pre defined scripts.as in there backup and so on
If you are getting that.you need to
1.open Acer recovery installer
2.Install Recovery.the first black box acroos screen.it will askbifnyoubwant to back up stock recoverybdo so.(this is the recovery program only not the system) .
3.boot into recovery and backup your whole tablet.or use the far right black button to d/load and install a new rom from his list.fallow the instructions there clickishly simple
Good luck
So what Acer recovery installer does is replace the stock recovery. To allow you to install non stock decryptedand other. Zip files of course it will install stock recoveries as well.read the Acer recovery install thread under Dev section it's al in there
Again Google luck
OK so here is what I did and it worked like a charm, installed cwm did a custom restore (everything but data) mounted the SD card on other tablet restored and voila I have Dolby mobile back! thank you guys for all the help and info, now I can truly mess with roms and be safe knowing I have a non currupt back up
thundercub88 said:
OK so here is what I did and it worked like a charm, installed cwm did a custom restore (everything but data) mounted the SD card on other tablet restored and voila I have Dolby mobile back! thank you guys for all the help and info, now I can truly mess with roms and be safe knowing I have a non currupt back up
Click to expand...
Click to collapse
SWEET! Glad you got it figured out!

[Q] n7 wont boot

i tried to flash paranoid android on my n7 running stock 4.2( i was rooted and unlocked ) after flashing all i get is setup wizard has stopped repeatedly i can boot back to recovery but when i click on install zip there are no files there anymore and the backup i made is no longer there either im not sure what to do next i can get to bootloader and recovery but i cant mount sd card or do anything really any help would be greatly appreciated ive been googling for a couple of hours and cant find my specific problem thanks
Recovery > Factory Reset / Wipe
^ that should get it back to working
You can also "adb shell" in while in recovery and look if your backups are in a subfolder of /data/media, like /data/media/0 most likely.
And in the future always keep a copy of your backups on your PC
HellcatDroid said:
Recovery > Factory Reset / Wipe
^ that should get it back to working
You can also "adb shell" in while in recovery and look if your backups are in a subfolder of /data/media, like /data/media/0 most likely.
And in the future always keep a copy of your backups on your PC
Click to expand...
Click to collapse
i tried recovery but it does nothing im trying to set up adb but it just makes no sense to me at all its almost like the computer doesnt even see the phone i know it has to be something simple as to why i cant access the files from clockwork recovery but for the life of me i cant figure it out
Download Google Nexus 7 Toolkit V3.2.0
choose option "9. Download, Extract + Flash Google Factory Stock Rom and follow the instructions..
i had the exact same problem with my nexus 7 and this worked like a charm
hope it helps.
Thanks for the help but I fixed the problem. I let it boot to the setup screen where it kept saying setup wizard has stopped. From there I could recognize the device on a computer and transfer files over even though it read grouper on full android and not nexus 7. Now I'm on eclipse and it seems to be working great but I'm going to get rid of clockwork and install twrp just so I can hopefully not have that happen again. One weird thing though when I look for my backup I made prior to all of this and even the paranoid android ROM and gapps I can't find them anywhere on my SD card its like they literally vanished.
Sent from my Nexus 7 using Tapatalk 2
oogabooga912666 said:
Thanks for the help but I fixed the problem. I let it boot to the setup screen where it kept saying setup wizard has stopped. From there I could recognize the device on a computer and transfer files over even though it read grouper on full android and not nexus 7. Now I'm on eclipse and it seems to be working great but I'm going to get rid of clockwork and install twrp just so I can hopefully not have that happen again. One weird thing though when I look for my backup I made prior to all of this and even the paranoid android ROM and gapps I can't find them anywhere on my SD card its like they literally vanished.
Sent from my Nexus 7 using Tapatalk 2
Click to expand...
Click to collapse
Where did you copy the files to? I have the same thing. The only folders I have are: Alarms, android, carbon, clockworkmod, dcim, digital editions, download, mobile systems, movies music notifications pictures podcasts and ringtones?
Unless there is a wy for it to be an actual drive right now it shows up as a music device in my computer.
when you did a wipe did you wipe all data? I know when I went to flash a ROM I wiped data like I did with my bolt and it erased everything on my n7.
Sent from my Infected HTC Rezound using Tapatalk 4 Beta
Hi guys, I hope this thread is still active...
I'm having the same problem here. I tried installing cyanogenmod onto my n7 and am now getting the same "unfortunately, setup wizard has stopped" message. I've tried wiping the data and rebooting, to no avail. I have the toolkit, but it won't recognize the tablet so I can't reboot from there. I have a backup on my PC, but can't get to it! Sigh...
Thanks in advance for the help

[Q] CWM won't recog drives, can't do Nandroid backup

Updated my rooted Honeycomb AT100 with Dale's Rooted Stock ICS ROM ... downloaded some new apps and reloaded some old ones extracted from a prior nandroid backup and got the thing running just the way I want it (almost, sometimes the screen locks up during sleep and won't come back without a poweroff and reboot.)
Anyway, I had it to the point where doing a backup is mandatory and discovered it just won't allow it.
It WON'T soft boot into recovery mode using apps like ROM Manager or Titanium (and it won't flash a new version of CWM because the AT100 is unsupported.)
It WILL hard boot into recovery mode using the volume/off button but when it does it returns can't find E:SD Card when I try to do a backup. I tried to work around this by backing up to a USB stick, but CWM resolutely refuses to recognize and mount the USB device.
Here's another weird thing, ROM manager reports I have CWM 5 installed but sometimes when I hard boot into recovery mode I get the old "push button" version of CWM, other times I get the "touch" version ... it seems to be random selection .
I thought, perhaps, the best solution would be to uninstall and reinstall CWM but now matter how I (pardon the pun) I root around I can't find anyway to do that. Your help would be very, very appreciated. Thank you in advance.
Give my twrp a try, its been far less touchy then cwm has been.
Sent from my Galaxy Nexus using Tapatalk 2

Stuck at google logo, recovery mode doesn't work?

I seem to have messed up the process. I successfully unlocked and rooted my Nexus 7 but during wipe process using JROM flasher something didn't go right and now I'm stuck at the google logo screen forever. I can boot into fast recovery mode but that's about it. I can't do anything.
I've had this done before on my nexus phone but it seems I managed to f it up this time.
I thought I had a rom zip file copied on to the Nexus 7 but it doesn't show in the menu. Now I'm stuck at the logo screen not having access to any roms to install. How do I reset all of this to factory? I've already checked most of the threads regarding this and haven't been able to find a solution yet.
calavera-pw said:
I seem to have messed up the process. I successfully unlocked and rooted my Nexus 7 but during wipe process using JROM flasher something didn't go right and now I'm stuck at the google logo screen forever. I can boot into fast recovery mode but that's about it. I can't do anything.
I've had this done before on my nexus phone but it seems I managed to f it up this time.
I thought I had a rom zip file copied on to the Nexus 7 but it doesn't show in the menu. Now I'm stuck at the logo screen not having access to any roms to install. How do I reset all of this to factory? I've already checked most of the threads regarding this and haven't been able to find a solution yet.
Click to expand...
Click to collapse
before you do anything, use your recovery to see if the rom zip is located in /data/media/0/. if its there, flash it from that location.
Are you able to boot into recovery?
If yes, it could be as simple as plugging your tablet into the computer and mounting the usb, drag and drop the rom, and flash it without using a toolkit (only recovery). I'm not familiar with jrom flasher, but i will say the more variables there are, the more chance of a problem.
If no, you're best off running the stock factory image through your computer, found here: https://developers.google.com/android/nexus/images#nakasi. I had your problem at one point, and could not even boot into recovery. After trying to install cwm through adb (which failed), and a number of toolkits, the factory image was what brought my nexus back to life.
I remember reading that sometimes a wipe can delete your recovery as well as your system (and whatever else you have on your n7), although i dont know if that was ever fixed, as i got my tab replaced a month or two ago and havent rooted it again yet. There was some type of command or .zip or something that should be used to keep recovery after wipes. When i expirienced problems such as yours, it was also from a bad wipe from a toolkit. Using just the recovery afterwards, i never expirienced any issues, even without the recovery fix.
I would definitely try simms suggestion first if you can access recovery. If that fails, try one of the above processes.
PS, even if you can access recovery, if at this point you just want to go completely stock, the factory image will work regardless.
cheers
Thanks for the help guys, I've been struggling for the past 3~4 hours but I found a solution.
What I did was use JROMFlasher and upload a rom zip to the sdcard directly and go from there.
calavera-pw said:
Thanks for the help guys, I've been struggling for the past 3~4 hours but I found a solution.
What I did was use JROMFlasher and upload a rom zip to the sdcard directly and go from there.
Click to expand...
Click to collapse
Guys..I have the similar problem..I am not able to upload rom zip to sdcard using JROMFlasher..Also USB mounting is not working for me ..
Is there any other way to move ROM to sdcard?:crying:
appoos said:
Guys..I have the similar problem..I am not able to upload rom zip to sdcard using JROMFlasher..Also USB mounting is not working for me ..
Is there any other way to move ROM to sdcard?:crying:
Click to expand...
Click to collapse
ADB
Sent from my Galaxy Nexus
Pirateghost said:
ADB
Sent from my Galaxy Nexus
Click to expand...
Click to collapse
This dint work in my windows 8
appoos said:
This dint work in my windows 8
Click to expand...
Click to collapse
You're holding it wrong. ADB works on my Win8 machine
Pirateghost said:
You're holding it wrong. ADB works on my Win8 machine
Click to expand...
Click to collapse
can you tell me the procedure..
appoos said:
can you tell me the procedure..
Click to expand...
Click to collapse
no.
in the other thread that YOU created, you were given links to follow and the instructions are already there. i dont hold hands
I could do it with ADB..thanks guys

Need to copy over a nandroid backup but I can only boot to recovery!

Ok guys, I'm in deep trouble here. Kind of extremely desperate.
Please bare with my wall of text!
So I had just backed up my ROM, copied over the previous nandroid over to my computer and deleted it to make space for the new one. Made the new one, copied over the kernel I wanted to flash. Rebooted into recovery and simply flashed the kernel. That's where the screw-up started.
Wiped my cache and rebooted to a flashing purple and blue screen. Turned my phone off immediately and went to restore the backup I had just made. Not even midway through, I got "error while restoring /system". Nandroid is apparently no good?!
Now, I don't have anything on my SD to flash, not even a clean CM, another backup, nothing. I can only boot to recovery, if I try to reboot, I just get the google logo, then it goes off and back on, and so on. If I connect the phone to my PC, it obviously isn't detecting it.
I need a way to push or copy another nandroid backup or just a ROM over to my SD to flash something! I can't have bricked my phone!
Not too familiar with adb commands, haven't used them in ages!
I appreciate any help you can give me!!
EonHawk said:
Ok guys, I'm in deep trouble here. Kind of extremely desperate.
Please bare with my wall of text!
So I had just backed up my ROM, copied over the previous nandroid over to my computer and deleted it to make space for the new one. Made the new one, copied over the kernel I wanted to flash. Rebooted into recovery and simply flashed the kernel. That's where the screw-up started.
Wiped my cache and rebooted to a flashing purple and blue screen. Turned my phone off immediately and went to restore the backup I had just made. Not even midway through, I got "error while restoring /system". Nandroid is apparently no good?!
Now, I don't have anything on my SD to flash, not even a clean CM, another backup, nothing. I can only boot to recovery, if I try to reboot, I just get the google logo, then it goes off and back on, and so on. If I connect the phone to my PC, it obviously isn't detecting it.
I need a way to push or copy another nandroid backup or just a ROM over to my SD to flash something! I can't have bricked my phone!
Not too familiar with adb commands, haven't used them in ages!
I appreciate any help you can give me!!
Click to expand...
Click to collapse
Have you thought of using a toolkit like WugFresh NRT?
Sent from my Nexus 7 (2013)
---------- Post added at 06:05 AM ---------- Previous post was at 06:04 AM ----------
http://forum.xda-developers.com/showthread.php?t=1766475
Sent from my Nexus 7 (2013)
Berrydroidcafe said:
Have you thought of using a toolkit like WugFresh NRT?
Sent from my Nexus 7 (2013)
Click to expand...
Click to collapse
If you're talking about this one, reading the thread right now. About to download the windows version and try to flash stock and unroot, then root again.
Do you recommend anything else? I didn't want to lose root.
EonHawk said:
If you're talking about this one, reading the thread right now. About to download the windows version and try to flash stock and unroot, then root again.
Do you recommend anything else? I didn't want to lose root.
Click to expand...
Click to collapse
As far as losing root, you shouldn't lose it, and there's no reason to believe that you might have already lost it, but if you are planning on flashing stock and unrooting then it wouldn't matter anyway.
Sent from my Nexus 7 (2013)
Berrydroidcafe said:
As far as losing root, you shouldn't lose it, and there's no reason to believe that you might have already lost it, but if you are planning on flashing stock and unrooting then it wouldn't matter anyway.
Sent from my Nexus 7 (2013)
Click to expand...
Click to collapse
I'm stuck!!!
I tried flashing stock and unrooting, but I had issues with what it said could be either my drives not being installed, or my USB Debugging not being enabled. I don't think I ever enabled USB debugging after this last time I flashed CM. I tried going through full driver installation, but I still hit the same wall with USB debugging not being enabled!!
What should/can I do?
Boot into recovery and connect your USB cable on it. Download an ADB standalone and place the files you want to transfer there, open it and type:
adb push (local of the rom/kernel/wharever) (path to sd/internal storage). it would be something like that
adb push rom.zip /sdcard/0/
this will transfer the file to the root of the internal storage.
EonHawk said:
I'm stuck!!!
I tried flashing stock and unrooting, but I had issues with what it said could be either my drives not being installed, or my USB Debugging not being enabled. I don't think I ever enabled USB debugging after this last time I flashed CM. I tried going through full driver installation, but I still hit the same wall with USB debugging not being enabled!!
What should/can I do?
Click to expand...
Click to collapse
Did you go through the steps in the Full Driver Configuration Guide?
Sent from my Nexus 7 (2013)
sky0165 said:
Boot into recovery and connect your USB cable on it. Download an ADB standalone and place the files you want to transfer there, open it and type:
adb push (local of the rom/kernel/wharever) (path to sd/internal storage). it would be something like that
adb push rom.zip /sdcard/0/
this will transfer the file to the root of the internal storage.
Click to expand...
Click to collapse
Tried sideloading, sideloaded CM over. Seemed to work, but when I rebooted, got through to the CM logo and got stuck in a bootloop.
Rebooted into recovery and wiped device again.
Berrydroidcafe said:
Did you go through the steps in the Full Driver Configuration Guide?
Sent from my Nexus 7 (2013)
Click to expand...
Click to collapse
I tried, but I got stuck because I couldn't do Step 1 without having USB Debugging enabled!
EonHawk said:
Tried sideloading, sideloaded CM over. Seemed to work, but when I rebooted, got through to the CM logo and got stuck in a bootloop.
Rebooted into recovery and wiped device again.
Click to expand...
Click to collapse
Just a thought, have you considered using TWRP? Are you sure it was actually a bootloop and not a boot that is just taking a little longer than usual to finish?
Sent from my Nexus 7 (2013)
Berrydroidcafe said:
Just a thought, have you considered using TWRP? Are you sure it was actually a bootloop and not a boot that is just taking a little longer than usual to finish?
Sent from my Nexus 7 (2013)
Click to expand...
Click to collapse
I waited for over 5 minutes, turned it off, and tried booting it up. After another 3 minutes of nothing, I gave up.
Tried sideloading an old backup but wasn't able to sideload anymore..
Currently trying to do the driver things in the toolkit..
I may have screwed this up even more.
While doing Step 1, I again couldn't do the whole USB Debugging enable/disable, so I just went and did everything else that I could. Step 2 installed, Step 3 couldn't recognize my phone, just went back to Google bootloop.
I don't think I can even try sideloading stuff anymore.
I may have screwed this up even more.
While doing Step 1, I again couldn't do the whole USB Debugging enable/disable, so I just went and did everything else that I could. Step 2 installed, Step 3 couldn't recognize my phone, just went back to Google bootloop.
I don't think I can even try sideloading stuff anymore.
EDIT:
Ok, sideloading CM again. Currently at 70%. I'll keep you guys posted.
Sorry to post 4 times in a row, but still stuck in the CM bootloop.
Is there anything better I should try sideloading? Maybe a factory image?
Something that would completely restore everything?
Sorry to post 5 (FIVE) times in a row!
FIXED IT! **** YES! I was running out of time too, have to wake up in four hours for work, hahahah.
I really don't know what happened this time. Tried running the Flash Stock + Unroot again, and it went through!
Going to enjoy stock for a while, this scared me way more than my previous adventures with rooting have, and I'm not entirely (but mostly) new to this!
Thank you so much for your help man, couldn't have done it without some support. Really feel indebt to the guy that made the toolkit, though. Thanks all around!
EonHawk said:
Sorry to post 5 (FIVE) times in a row!
FIXED IT! **** YES! I was running out of time too, have to wake up in four hours for work, hahahah.
I really don't know what happened this time. Tried running the Flash Stock + Unroot again, and it went through!
Going to enjoy stock for a while, this scared me way more than my previous adventures with rooting have, and I'm not entirely (but mostly) new to this!
Thank you so much for your help man, couldn't have done it without some support. Really feel indebt to the guy that made the toolkit, though. Thanks all around!
Click to expand...
Click to collapse
Great! :thumbup:
Sent from my Nexus 7 (2013)

Categories

Resources