[Q] I accidentally deleted my OS - Nexus 7 Q&A, Help & Troubleshooting

Hi forum, this is my first time here. So I will try to keep it short and simple. I bought a mint Nexus 7. The previous owner had it rooted and it was on 4.1.2. I Saw the 4.2 update and tried installing the update over the air. When the device tried restarting, instead of going back to booting normal, it went into this thing called team win recovery project. I have noticed some stuff:
1. It says my device has on OS.
2. Its stuck there in my TWRP thing and I cant access my OS
2. my PC wasnt recognizing the device (I fixed that though by downloading the driver from Asus's website)
So long story short, I just want my device to be back to normal and unrooted. If its possible. Please if anyone can spare me there busy time, I would really appreciate it

Just read up on this thread. Best collection of all the proper information.
http://forum.xda-developers.com/showthread.php?p=27963969
Sent from my Nexus 7 using xda premium

youve got a custom recovery, you cant install an ota. but you can manually flash a rooted stock rom if you want. twrp is a great custom recovery btw. you can boot up from its menu, or you can force reboot it by holding down the power button for about 20 seconds.

Related

nexus 7 stuck on android is upgrading

i have a nexus thats completely stock( out of the box) worked fine for about a month, let the tablet die and has been unplugged for about a week. got it charged up and and would not turn on. using the nexus root toolkit i was able to get to turn on. unlocked the device( unlock logo below google icon on startup) was unable to get past that point. now finally i can get past the nexus boot logo but it gets stuck on aindroid is upgrading " optimizing app 1 of 11" i cant root using the root tool kit bc when i unlocked device it got rid of developer options ( by what the msg said before i unlocked). im simply trying to get my device to turn back on. i dont plan to root or install a rom, im fine with the stock rom. i just want to damn device to turn back on. when i was able to power on the device when i first got it i did upgrade to the newest jelly bean rom. any one can help me on this issue ??
thanks
Boot into temporary custom recovery using Nexus root toolkit(Advance menu). Now wipe cash and devlock than try rebooting into system. If it doesn't work you can try factory reset. Last but not the least will be Flash Stock + Unroot(Soft brick/boot loop).
ok i wiped cache and devlock was able to to pass the nexus logo into what looks like another android is upgrading screen it got up to 14 of 20 and froze. between my 1st post and yours i was able to get android to fully run. did all the 1st time setup but after about a couple screen taps the device kept freezing and coming up with crash reports. there were a few times that the stock launcher even forced close. after a couple of restarts it finally quit again and would not even pass the nexus logo. ill try to do the other options that u stated in your post. any other thoughts ?
dac2009 said:
ok i wiped cache and devlock was able to to pass the nexus logo into what looks like another android is upgrading screen it got up to 14 of 20 and froze. between my 1st post and yours i was able to get android to fully run. did all the 1st time setup but after about a couple screen taps the device kept freezing and coming up with crash reports. there were a few times that the stock launcher even forced close. after a couple of restarts it finally quit again and would not even pass the nexus logo. ill try to do the other options that u stated in your post. any other thoughts ?
Click to expand...
Click to collapse
If the factory reset doesn't work just go for the Flash. I don't think you are much worried about the data so it's not a big deal for you. and I'm quit sure this is gonna work. Best of luck.
ok did that. went smooth but then once again it just gets stuck at the nexus logo. waited for over 10 mins like the notes say after re flashing and nothing. so i did a restart this time it passed the nexus logo, went to android is upgrading optimizing app and gets stuck at 4 of 11. being that this is pure android are there custom roms out there that i could try to flash via odin. ive rooted and installed roms before on my other android devices no problem but they were never pure google. am i missing something here. also what would cause a brand new nexus 7 just to go "ape ****" on its self.
dac2009 said:
ok did that. went smooth but then once again it just gets stuck at the nexus logo. waited for over 10 mins like the notes say after re flashing and nothing. so i did a restart this time it passed the nexus logo, went to android is upgrading optimizing app and gets stuck at 4 of 11. being that this is pure android are there custom roms out there that i could try to flash via odin. ive rooted and installed roms before on my other android devices no problem but they were never pure google. am i missing something here. also what would cause a brand new nexus 7 just to go "ape ****" on its self.
Click to expand...
Click to collapse
Okay, that's weird!!!
Are you using Nexus Root Toolkit?? If yes are you using pre-downloaded android??
Try Automatically download + Extract.....
Last of all I'm really confused how there could be a problem when you got a fresh OS and Stock.
I agree with the messing thing that you told... Try checking and double checking everything... Check if you have selected the correct device or not.
And do a full wipe(including system) using TWRP before flashing again.
Edit: Make sure you are using the latest toolkit. You can get it from the link bellow.
http://forum.xda-developers.com/showthread.php?t=1766475
Try flash stock image throught toolkit.
i have the most current root toolkit. i installed the rom that was available to download via the app which was android 4.2.2 jdq39
dac2009 said:
i have the most current root toolkit. i installed the rom that was available to download via the app which was android 4.2.2 jdq39
Click to expand...
Click to collapse
I don't see a way how the problem still exists... :S
Whatever the problem is it's seems to be with android OS. But how it exists in completely new android. Sorry can't find a reason behind the problem. You can still try flashing any older android (like 4.1.2).
ok i got a zip of stock 4.1.2 and using the root tool kit i can install a zip via the twrp but it wont let me bc it says adb device not found and that developer options need to be turned on. im un able to turn it on bc i cant even get into the rom on the device.
thanks
ok i got it working. i was able to flash the older rom to my device and its working so far. no force closes yet.
thanks for everyone's help
ok im about to throw this tablet out the window. was messing around with the tablet and it auto installed ( well at least tried to) the 4.2 update. it downloaded the update went to install and now im stuck at this screen(check pic) and cant even get it into recovery mode. im at the point now to cut my loss and say the hell with it. anyone else have any ideas on whats my next step. the thing that wireds me out is of the roms ive been able to use it all works great for only about 5 mins. it seems like the more i touch the screen to do anything it will freeze on me(it will do it after 5 mins or so after a restart). https://www.dropbox.com/s/arnauysa4oglp5b/2013-05-21%2018.37.24.jpg
dac2009 said:
ok im about to throw this tablet out the window. was messing around with the tablet and it auto installed ( well at least tried to) the 4.2 update. it downloaded the update went to install and now im stuck at this screen(check pic) and cant even get it into recovery mode. im at the point now to cut my loss and say the hell with it. anyone else have any ideas on whats my next step. the thing that wireds me out is of the roms ive been able to use it all works great for only about 5 mins. it seems like the more i touch the screen to do anything it will freeze on me(it will do it after 5 mins or so after a restart). https://www.dropbox.com/s/arnauysa4oglp5b/2013-05-21 18.37.24.jpg
Click to expand...
Click to collapse
I can't just think of anything else. Just telling you the things that I'd have done if I were you.
* reinstall boot
* change kernel
* turn off the auto update of android.
* try some costume room.
Don't throw it out the window you call always donate it to me if you really wanna throw it or make a drop test video...
Last of all just don't lose hope keep trying. you'll find out something surely and share it with us.
Sent from my Nexus 7 using XDA Premium HD app
Daft question, but the few times you managed to get it running, was your Wifi on?
Sent from my GT-I9300 using xda app-developers app
yes my wifi was on and was able to stream . spotify among other things
Not the exact same situation, but I found certain Wifi router's would trip my nexus into reboots until I rooted
Sent from my GT-I9300 using xda app-developers app
Phone is stuck in "Android is upgrading. Optimizing application 1 of 1" HELP!!!!!!!!!
hey guys, my phone is stuck in "Android is upgrading. Optimizing application 1 of 1"
and all I can do is
1. apply sdcard/update.zip
2. reboot system now ( does NOT work coz it brings me back to optimizing apps )
3. apply update from external storage
4. wipe data / factory reset
5. wipe cache partition
6. apply update from cache
is there a way i can backup first all my files before factory resetting my phone (if thats the only option i have)????
help me please

[Q] Help!

Hi guys i recently rooted my nexus 7 and then i tried to download a custom rom (i think it was Cyanogen Mod 10.1 4.2.2 but i`m not sure and now it`s stuck on cyanogen mod logo and then it says unfortunately setup wizard has stopped...i am a noob so could you explain to me how to fix this ?(my PC doesn`t recognizes it )
bobolin said:
Hi guys i recently rooted my nexus 7 and then i tried to download a custom rom (i think it was Cyanogen Mod 10.1 4.2.2 but i`m not sure and now it`s stuck on cyanogen mod logo and then it says unfortunately setup wizard has stopped...i am a noob so could you explain to me how to fix this ?(my PC doesn`t recognizes it )
Click to expand...
Click to collapse
You also need to install the Google Apps package.
That won't help. It is not required to install for a working ROM. You only need Gapps if you want the Google apps like the play store. It sounds like a bad flash or a bad download. Try to reflash through recovery, if that doesn't work, boot into recovery and mount your tablet. I don't know what recovery you are on, so i can't give you info on how to do that.
Sent from my SPH-D710 using xda premium
I don't use CyanogenMod but sometimes flashing a patch is also need afterwards. Nonetheless, before continuing with experimenting different ROMs, it would be wise to flash back to stock then make a Nandroid backup on your device, one on your PC and one in the cloud. Installing MultiRom is also highly recommended.
My guess is that someone didn't factory reset in recovery before flashing.
Sent from my Galaxy Nexus
Manually boot into recovery by holding power and volume up and volume down at same time. Then when you see the around laying down select recovery with volume key. Try restoring a backup or flashing another rom in recovery.
Sent from my SAMSUNG-SGH-I747

[Q] "Bootloop" Nexus 7

I panicked and probably did something quite stupid...
So I tried to flash the new cyanogenmod rom to have a taste of kit kat, but then I had the status 7 error.
This never occurred to me before, I didn't keep a backup to fall back onto... ( yes, I am an idiot, I learned my lesson, the hard way)
Than the device won't boot, it shows the Google logo twice, and then goes into the clockwork mod, where you choose to flash roms
and I am stuck.
I tried Nexus Root Toolkit, doesn't help because my device is not booting up, no way can it install the drivers properly...
and I think I did something more ingenious... I just tried anything on the Toolkit, and I got my rooted Nexus 7 locked...
But it's still the same, I am stuck at the clockwork mod thing just as before... Wiped whatever I can. and even formatted the sdcard and system...
Some Android Wizard out there... Please help...
If at boot you go to recovery directly... You have had to flash new version of recovery in wrong partition. You must flash it last version of recovery with "fastboot flash recovery yourrecovery.IMG" (see 'recovery' as partition to flash). Then flash boot and system partitions from factory image (in XDA have you multiples threads about it) if you want to keep your data. If not, flash factory image from usual ways (this wipes your data) and then flash recovery like I say above.
After that, try to flash CM again.
PS: I recommend TWRP instead of CWM.
Sent from my Nexus 7 (grouper) using Tapatalk.
but its more serious than that... My computer doesnt recognize the tablet because of some driver issues... I am not sure, at this moment, whether the USB debugging thing still works
i can only get to the clockwork mod page, bootloader and thats it.
I cant flash anything, I cant transfer files from the PC to tablet....
please, please help.
bump!,
Im in a similar boat. I bricked my tablet while trying to force an update. It wouldnt autoupdate (there was always an error about cant find zip file...) so I tied to install it with Skipsoft program. After 20 minutes i realize my computer has frozen....So I waited 2 hours and nada. So I had to reboot my desk top. At that time my tablet is now bricked....what do we do?
Vishnuisgod said:
bump!,
Im in a similar boat. I bricked my tablet while trying to force an update. It wouldnt autoupdate (there was always an error about cant find zip file...) so I tied to install it with Skipsoft program. After 20 minutes i realize my computer has frozen....So I waited 2 hours and nada. So I had to reboot my desk top. At that time my tablet is now bricked....what do we do?
Click to expand...
Click to collapse
hello friend.
1. we can pray
2. i think we have to look at some software that can do something more "fundamental" than wugus nexus tool kit, and communicate with the tablet
i am just guessing, i crashed my tablet, so....
dangercl0se said:
hello friend.
1. we can pray
2. i think we have to look at some software that can do something more "fundamental" than wugus nexus tool kit, and communicate with the tablet
i am just guessing, i crashed my tablet, so....
Click to expand...
Click to collapse
I think I got it!!!!!!!!!!
using the skipsoft,
first i did option 1, install usb settings; then
I used option #6 force recovery.. I think i did stock rom.
now Im update with kitkat and it updating to 4.4.2
Vishnuisgod said:
I think I got it!!!!!!!!!!
using the skipsoft,
first i did option 1, install usb settings; then
I used option #6 force recovery.. I think i did stock rom.
now Im update with kitkat and it updating to 4.4.2
Click to expand...
Click to collapse
hey
can you post links to where u got the stuff?
coz looks like the skipsoft homepage is not working
dangercl0se said:
hey
can you post links to where u got the stuff?
coz looks like the skipsoft homepage is not working
Click to expand...
Click to collapse
it was already on computer....
make sure you look for "android tool kit"....

PLEASE READ Nexus 4 stuck in a bootloop (softbricked)

This is my first time posting a thread, so I'm very sorry if its in the wrong place.
I've had my Nexus 4 for over a year now and over the past 1-2 weeks it has kept on randomly rebooting and freezing, so I decided to install a custom rom on it (prior to this I had not modified my phone in any way), this was something which i've wanted to do for a long time.
The last time I installed a custom rom and rooted a phone was on the samsung galaxy ace around 2-3 years ago.
the first thing I did was backup the data which I needed. Then I turned on USB debugging and unlocked my bootloader and rooted my phone (my phone is running android 4.4.2) this all went without a hitch. I turned on my phone and superuser ( the version of superuser was chainfire's 0.99) was there. Then I downloaded Paranoid Android, it was the third one down in the mako section of paranoid android. Then I downloaded gapps.
I watched a tutorial on how to flash a rom via cwm but the tutorial forgot to mention making a backup, and me being a bit of a noob it didn't occur to me. When I was installing Paranoid android it said something like "no folder context" and then it said installation aborted ( I had done a factory reset,wiped dalvik cache and wiped cache) gapps installed perfectly but my phone was now in a bootloop. It would turn on and get to the Google logo, where it would stay for a few minutes and then turn off again and do the whole thing again or it would turn on and go straight to cwm.
then I read a tutorial on how to flash the stock rom and followed it word for word but that ended up unmounting my sd card.
Then I read this tutorial:http://forum.xda-developers.com/nexus-4/general/how-to-how-to-flash-factory-image-t2010312 and made sure I followed it word for word but at one point it said that there wasnt enough space but the installation still finished but did nothing, I tried again today with my phone in safe boot mode ( the one where you press volume down and power together) and it was all going fine until I got to step D.9 (fastboot flash system system.img) at this point my computer froze and cmd stopped working, I could not type anything into it even when my PC unfroze.
I tried this tutorial a number of times before and sometimes it would fail on some parts and keep going and on others it would fail and then say press any key to exit.
I hope I've provided enough information here and would be extremely grateful if someone would help me out as I really need my phone because I have exams coming up and i use my phone to plan my revision and to talk to people about the work etc. If anyone can help, please do, thank you very much for reading.
Have a look at these to put the rom in the sdcard partition and then flash it by recovery
http://forum.xda-developers.com/showthread.php?t=1392310
http://forum.xda-developers.com/galaxy-nexus/help/files-to-sd-card-fastboot-mode-t1542980
Sent from my Nexus 4 using Tapatalk

Nexus 7 (2012) WiFi Soft-bricked

Hi,
I have an old Nexus 7 (grouper on completely stock KTU84P, unrooted) that I gave up on a long time ago and recently found it again. I charged it up and the Google logo came up. And then the 'Start' in green with a arrow around it appeared. It was stuck. I could use the volume buttons to power off or enter recovery but that was it. Once in recovery, I tried wiping cache but that got stuck on 'Formatting /cache'.
Now, I do remember it got very sluggish when I last used it a long time ago to a point that it just used to freeze up on me every few minutes. Maybe, i hope not, but maybe it's got something to do with the notorious flash emmc(or whatever it was called) that this device has. If not, I'd love to be able to use it again in any way possible.
TIA.
geforceonline said:
Hi,
I have an old Nexus 7 (on completely stock, unrooted) that I gave up on a long time ago and recently found it again. I charged it up and the Google logo came up. And then the 'Start' in green with a arrow around it appeared. It was stuck. I could use the volume buttons to power off or enter recovery but that was it. Once in recovery, I tried wiping cache but that got stuck on 'Formatting /cache'.
Now, I do remember it got very sluggish when I last used it a long time ago to a point that it just used to freeze up on me every few minutes. Maybe, i hope not, but maybe it's got something to do with the notorious flash emmc(or whatever it was called) that this device has. If not, I'd love to be able to use it again in any way possible.
TIA.
Click to expand...
Click to collapse
Is it possible to connect via USB?
If so, then try a clean flash.
Boldie90 said:
Is it possible to connect via USB?
If so, then try a clean flash.
Click to expand...
Click to collapse
It is possible. I tried sideloading a stock OTA package (using just adb) called '4939a9ff6d10c495beaed26ac96228246f724272 signed-nakasi-LRX21P-from-KTU84P 4939a9ff' but that failed. Then I tried the Nexus Root Toolkit's flash stock feature. It connects and goes well until it reboots to unlock the bootloader. The display doesn't turn on but the computer recognizes a new device called 'APX' with hardware id 'USB\VID_0955&PID_7330&REV_0103'. I've tried booting it into custom recovery using NRT but that didn't work either.
According to the current '3e' stock recovery I remembered that it used to run KTU84P (4.4 Kitkat) and never ran Lollipop which it seems caused some trouble too.
Please try Wugs Toolkit.
That is an easy program to do all kind of repairs.
It never failed me.
Boldie90 said:
Please try Wugs Toolkit.
That is an easy program to do all kind of repairs.
It never failed me.
Click to expand...
Click to collapse
'Nexus Root Toolkit' or NRT IS Wugs toolkit.
Anyone?

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