Help unexplainable bootloops and no pc - Nexus 7 Q&A, Help & Troubleshooting

I have no explanation of what has happened to my n7. It shut off by itself and just bootloops when I try to turn back on. I can get into recovery and I have a nandroid backup of a stock rom. Everytime I restore it restores system and then fails?? I flashed 3 different roms and all r flashed successfully but I get the same bootloops . I was using latest twrp and was get error I/o data / speedtest. Something else but I flashed cwm touch b4 I could jot down the errors . I figured it was twrp bug and didnt realize I wouldnt b able to flash back to twrp do to using gooim to write the image in the first place. I am desperate to find out what happened and I wont b near a pc for a few days. I have an unlocked rooted grouper version . I have read and searched b4 posting
Sent from my SGH-M919 using Xparent Skyblue Tapatalk 2

it could be a hardware failure, maybe the mounted drive (emulated sd card) is corrupted and broken? the boot partition seems to be working

It sux cuz I wont have access to a pc for a few days
Sent from my SGH-M919 using Xparent Skyblue Tapatalk 2

have you tried clearing the whole of /system /data /cache... everything except /sdcard then flash a new rom? maybe that'll clear some things up

Billchen0014 said:
have you tried clearing the whole of /system /data /cache... everything except /sdcard then flash a new rom? maybe that'll clear some things up
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Click to collapse
Yes I wiped system /cache/dalvik/ and factory reset I did them all like 5 times each and flashed a brand new rom. Its so weird
Nothing works. I am always prepared for atuff like this with multiple nandroids cwm/twrp but they both fail to restore
Sent from my SGH-M919 using Xparent Skyblue Tapatalk 2

Back in a few months ago I'm faced with that problem once, tried everything like factory reset, format system/data/cache/sd, install new ROM and also tried to restore by nandroid backup (that used to work fine before that problem occur) but non of these solutions work.
Finally I've to use fastboot to flash it to 4.1.2 (to format and re-partition the device) and flash it back to 4.2.2 and then it work fine again even with many custom rom and kernel installed to my N7 very frequent and today it still work just fine.

why always me said:
Back in a few months ago I'm faced with that problem once, tried everything like factory reset, format system/data/cache/sd, install new ROM and also tried to restore by nandroid backup (that used to work fine before that problem occur) but non of these solutions work.
Finally I've to use fastboot to flash it to 4.1.2 (to format and re-partition the device) and flash it back to 4.2.2 and then it work fine again even with many custom rom and kernel installed to my N7 very frequent and today it still work just fine.
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Click to collapse
Thanks that is what im gonna have to do
Sent from my SGH-M919 using Xparent Skyblue Tapatalk 2

Thanks for the advice i got my pc back today and used wugs toolkit to flash factory image and it booted up thank god .
Sent from my Nexus 7 using Tapatalk 4 Beta

bbobarino said:
Thanks for the advice i got my pc back today and used wugs toolkit to flash factory image and it booted up thank god .
Sent from my Nexus 7 using Tapatalk 4 Beta
Click to expand...
Click to collapse
In the future, I'd refrain from flashing if you didn't have a computer on hand.
Sent from my Nexus 7 using XDA Premium HD app

peneoark said:
In the future, I'd refrain from flashing if you didn't have a computer on hand.
Sent from my Nexus 7 using XDA Premium HD app
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Click to collapse
I couldnt agree more but thats the weird thing I didnt even flash anything for like a week b4 this happened thats why it was so bizzare to me. Still cant explain why it did that
Sent from my SGH-M919 using Tapatalk 4 Beta

bbobarino said:
I couldnt agree more but thats the weird thing I didnt even flash anything for like a week b4 this happened thats why it was so bizzare to me. Still cant explain why it did that
Sent from my SGH-M919 using Tapatalk 4 Beta
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Electronics can be wacky sometimes

Related

[Q] My device thinks it's 6 gigs instead of 16.... Help?

So I've been looking and I haven't found an answer to this problem
I have a 16 gig nexus 7 and I like to tinker with it. I rooted it quite quickly just after getting it, and I have loaded custom roms, ect. The problem arose when I saw Ubuntu for the Nexus 7! I just HAD to try it out! So I did, and it wasn't so great :/ I went back to Android and a couple days later I realized that somehow my Nexus 7 thinks it's 6 gigs instead of 16. I was wondering if it was something that went wrong with the partitions when I installed Ubuntu on it, and if there was any way I could possibly fix it.
Thanks for all the help
Have you tried flashing a stock image back on the device?
Sent from my SGH-I747 using Tapatalk 2
peneoark said:
Have you tried flashing a stock image back on the device?
Sent from my SGH-I747 using Tapatalk 2
Click to expand...
Click to collapse
I believe I have. A little unsure though. I downloaded the stock 4.2 and flashed that onto it. Was that right or do I have to find the stock image that came with it out of the box (so 4.1.2 or close)?
Factory reset will fix the issue without installing the ROM I believe.
Sent from my Nexus 7 using Tapatalk HD
dottat said:
Factory reset will fix the issue without installing the ROM I believe.
Sent from my Nexus 7 using Tapatalk HD
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Click to collapse
Well I've tried it before... No harm in trying it again after I do a backup. Will update how this goes.
EDIT I just did a factory reset and no dice. It still believes it is 6 gigs.
RimSide said:
Well I've tried it before... No harm in trying it again after I do a backup. Will update how this goes.
EDIT I just did a factory reset and no dice. It still believes it is 6 gigs.
Click to expand...
Click to collapse
What i believe has happened is that your partition module has become corrupted.
So, you tried flashing stock, and tried factory reset?
Does it show up on your computer as 6 GB when you connect it?
I had the same thing happen. I just used wugs toolkit to flash back to stock, then rerooted from there. That is the easiest way I know of to fix. Becides download times it only takes like 15 minutes to flash to stock, then unlock and root and you are back on your way.

Mild "Brick"

Was running CM10.1 stable and encrypted my phone. Hated the performance problems, went to roll back and factory reset did not work in either Android or CWM. Since everything was encrypted I had to reformat /system, /cache, and /sdcard. CWM and fastboot work just fine, but I still can't mount /sdcard :/. Should I sideload a rom or what? How do I get my device fully working again?
godman_8 said:
Was running CM10.1 stable and encrypted my phone. Hated the performance problems, went to roll back and factory reset did not work in either Android or CWM. Since everything was encrypted I had to reformat /system, /cache, and /sdcard. CWM and fastboot work just fine, but I still can't mount /sdcard :/. Should I sideload a rom or what? How do I get my device fully working again?
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Click to collapse
Since you have all ready wiped everything, I would just go ahead and flash the system image and start over
Sent from my Nexus 4 using xda app-developers app
CrypticRook said:
Since you have all ready wiped everything, I would just go ahead and flash the system image and start over
Sent from my Nexus 4 using xda app-developers app
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well I loaded up the toolkit so I could easily flash 4.2.2 stock. It wouldn't have been much of a problem but my phone is my alarm and I'm not home so I'm working with very limited resources. so it's fixed now by using the toolkit and flashing stock.
thanks for the reply
godman_8 said:
well I loaded up the toolkit so I could easily flash 4.2.2 stock. It wouldn't have been much of a problem but my phone is my alarm and I'm not home so I'm working with very limited resources. so it's fixed now by using the toolkit and flashing stock.
thanks for the reply
Click to expand...
Click to collapse
Sorry ment to say factory image but glad you got it sorted out. Better luck in your future endeavors
Sent from my Nexus 4 using xda app-developers app

Has anyone managed to actually use TWRP on G2?

I've got stuck in boot loop twice in a row after spending hours restoring phone with different method. Maybe I should have learned my lesson not to touch TWRP. Has anyone backedup and restored without a problem? Is there a way I can fix this issue without starting all over again?
stickmage said:
I've got stuck in boot loop twice in a row after spending hours restoring phone with different method. Maybe I should have learned my lesson not to touch TWRP. Has anyone backedup and restored without a problem? Is there a way I can fix this issue without starting all over again?
Click to expand...
Click to collapse
Ive backed up and restored twice now with no problems, did you completely wipe and factory reset? You have to do it in that order.
I forgot, and just restored. But that shoulnd't cause bootloops. Ive used TWRP before on gnexus. what did you learn from your first bootloop error? I saw you had many posts. What have you changed to fix that ?
stickmage said:
I forgot, and just restored. But that shoulnd't cause bootloops. Ive used TWRP before on gnexus. what did you learn from your first bootloop error? I saw you had many posts. What have you changed to fix that ?
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Click to collapse
This isnt the Gnex, i know what you mean, this phones recovery method doesnt work the same as the nexus.
I learned this from other people's trial and error actually from this very g2 forum. With this device it requires a complete wipe and then a factory reset.otherwise boot loops will occur.
Walter21026 said:
This isnt the Gnex, i know what you mean, this phones recovery method doesnt work the same as the nexus.
I learned this from other people's trial and error actually from this very g2 forum. With this device it requires a complete wipe and then a factory reset.otherwise boot loops will occur.
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Click to collapse
in your experience, has how you flashed TWRP mattered? What about how you booted into recovery? I recall you bricked not trying to restore. is wiping the only thing you changed to prevent the boot loop?
stickmage said:
in your experience, has how you flashed TWRP mattered? What about how you booted into recovery? I recall you bricked not trying to restore. is wiping the only thing you changed to prevent the boot loop?
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Click to collapse
Yes, ive had one bootloop from using TWRP but a full wipe and FR resolved this issue. I did brick once by taking the verizon OTA while having TWRP. But that was a month ago and I tried to restore from my backup to no avail though. This was fixed by the devs. Anyway bottom line when I ran into bootloop issues I just did this methodology and it worked, its def different from how we use TWRP on the Gnex.
Is this what your asking about or no?
I ran into the same problem but fixed it using the method in "go back to stock" thread. The mistake I made was that I chose to format my internal storage in the wipe menu so i couldn't restore either lol.
Sent from my LG-D802 using xda app-developers app
I had this issue when I tried to use an app to flash recovery. . I! pushed it with adb and have been crack flashing ever since
Sent from my VS980 4G using Tapatalk
Never had any issue using twrp
Sent from my LG-D801 using xda app-developers app
bhd2786 said:
I had this issue when I tried to use an app to flash recovery. . I! pushed it with adb and have been crack flashing ever since
Sent from my VS980 4G using Tapatalk
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Click to collapse
Can you point me to a method to install via ADB? I am confused about loki's involvement.
FWIW, I'm using TWRP without issue so far. Very easy install and I've done two backups, but have not had to restore anything yet.
drtchocky said:
Can you point me to a method to install via ADB? I am confused about loki's involvement.
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?p=45713343
I used option 2 ... I found a recovery file with Loki already in it
bhd2786 said:
http://forum.xda-developers.com/showthread.php?p=45713343
I used option 2 ... I found a recovery file with Loki already in it
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Click to collapse
Can you point me to that file?
Sent from my VS980 4G using Tapatalk
drtchocky said:
Can you point me to that file?
Sent from my VS980 4G using Tapatalk
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Click to collapse
The file is in the link that you quoted. Choose the img file for your particular device.
drtchocky said:
Can you point me to that file?
Sent from my VS980 4G using Tapatalk
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Click to collapse
http://www.teamw.in/project/twrp2/197
Holy Crapshoot that was easy... how do you reboot into recovery using hardware buttons on this thing?
I use the clockwork mod app .. if you use the hard buttons I think you have to choose the factory reset option and then that will take you to recovery. .. I have not used that method. .. just what I have read. .. vol down and power. .please research that first
Sent from my VS980 4G using Tapatalk
bhd2786 said:
I use the clockwork mod app .. if you use the hard buttons I think you have to choose the factory reset option and then that will take you to recovery. .. I have not used that method. .. just what I have read. .. vol down and power. .please research that first
Sent from my VS980 4G using Tapatalk
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CWM works with TWRP?
drtchocky said:
CWM works with TWRP?
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Click to collapse
Yep....
Sent from my VS980 4G using Tapatalk

Can't flash new rom

I seem to have a slight problem, I cannot flash any rom on my d802. It flashes ok in recovery but cannot get past setup without force closing and restarting the setup and cannot enter the rom. I can only restore the backup that I have and works fine. Am I missing something. ? Also I just get the android coloured cross boot screen not the lg one.
Sent from my LG-D802 using Tapatalk
Did you wipe after flashing?
Sent from my LG D802
What Rom are you flashing?
Sent from my LG-D800 using Tapatalk
tdevaughn said:
What Rom are you flashing?
Sent from my LG-D800 using Tapatalk
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hi i too can not flash any roms ..i can wipe ,i can back up ,and even flash mods..but when flashing a rom i get black screen ..i dont have any clue on what to do next help
What Roms are you flashing? Nobody can help until you explain what you are doing
Sent from my LG-D802 using Tapatalk
I am on starfighters flex 3.5 rom. If I flash anything else flex or stock the setup screen in the wizard is plain android not lg themed. I have tried full wiping, wiping with system or dirty flashing. I have tried all recoverys . it gets to the end of the setup wizard and then just restarts the setup after force closing. I can only restore the flex rom from backup. If I try to flash the same rom from scratch it does the same.
Sent from my LG-D802 using Tapatalk
fridaycider said:
I am on starfighters flex 3.5 rom. If I flash anything else flex or stock the setup screen in the wizard is plain android not lg themed. I have tried full wiping, wiping with system or dirty flashing. I have tried all recoverys . it gets to the end of the setup wizard and then just restarts the setup after force closing. I can only restore the flex rom from backup. If I try to flash the same rom from scratch it does the same.
Sent from my LG-D802 using Tapatalk
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Click to collapse
So you have the 3.5 ROM and the myhub fix zips right?
Then start by wiping cache,davlik,system, and data then wipe those again.....then flash the ROM zip then the myhub fix.....then wipe cache and davlik again this reboot.....
Thanks for the reply. But how will I be able to move back to a non flex rom?
Sent from my LG-D802 using Tapatalk
fridaycider said:
Thanks for the reply. But how will I be able to move back to a non flex rom?
Sent from my LG-D802 using Tapatalk
Click to expand...
Click to collapse
Download another ROM and gapps if needed,....go into recovery do the same four wipes(cache,davlik,system and data .....then do again for good measure then flash the ROM and flash the gapps if needed.....then wipe cache and davlik ....then reboot! How this helps....you should always make a back u before you start flashing so if anything bad happens just wipe and restore...
Ok thanks I'll give this a go later. I have the backup of this rom, makes a change for me to have one. I am a bit wreckless with flashing roms sometimes as I seem to try all of them.
Sent from my LG-D802 using Tapatalk
Tried everything you suggested but its not working. Going to unroot and flash back to full stock factory and start again.
Sent from my LG-D802 using Tapatalk
fridaycider said:
Tried everything you suggested but its not working. Going to unroot and flash back to full stock factory and start again.
Sent from my LG-D802 using Tapatalk
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Click to collapse
Hmm were you able to flash any other ROM? This Doesn't sound like a root problem, sound like the rom
Doesn't seem to matter what rom I flash. Even the one i have the backup of. It happens with any rom I've tried to flash.
Sent from my LG-D802 using Tapatalk
fridaycider said:
Doesn't seem to matter what rom I flash. Even the one i have the backup of. It happens with any rom I've tried to flash.
Sent from my LG-D802 using Tapatalk
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Click to collapse
So the ROM will start up and just for close? And your wiping everything besides internal storage before flashing?
It will start setup till it gets to end of setup then force close then restart setup wizard. But its happening on roms that I've flashed before. Wiping everything except data. Numerous times.
Sent from my LG-D802 using Tapatalk
fridaycider said:
It will start setup till it gets to end of setup then force close then restart setup wizard. But its happening on roms that I've flashed before. Wiping everything except data. Numerous times.
Sent from my LG-D802 using Tapatalk
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Click to collapse
i have a d800 i have twrp 2.6.3.3 i think it is i can back up flash mods wipe but can not flash any rom no matter what rom i try it goes threw all the flashing says pass or good reboot to a black screen tried clean rom tried stock rooted rom tried a aokp rom ,,all with same result,, can anybody help thanks
Which rom variant are you flashing? Sounds like you are flashing a rom for a different variant
Sent from my LG-D802 using Tapatalk
ralphie1267 said:
i have a d800 i have twrp 2.6.3.3 i think it is i can back up flash mods wipe but can not flash any rom no matter what rom i try it goes threw all the flashing says pass or good reboot to a black screen tried clean rom tried stock rooted rom tried a aokp rom ,,all with same result,, can anybody help thanks
Click to expand...
Click to collapse
I tried a stock rooted att d800 ROM and boots to lg logo then black screen then I have to use button down power to get into recovery to flash my back up this us my result for every ROM I tried. U flow op direction for flashing
Sent from my LG-D800 using xda app-developers app
I do a factory reset in twrp. Then flash the rom. Then boot up. 1st boot can take 10 minutes, make sure you are waiting long enough for it to process
Sent from my LG-D802 using Tapatalk
I've ended up flashing kdz and starting all over. All is ok now. Not sure what happened. Thanks for all your help though..
Sent from my LG-D802 using Tapatalk

IMEI Problems

Hello Guys,
im facing a problem with my i9505,
I've been using Liquidsmooth Rom for some time,
and yesterday i flashed some roms, and now my sim card isn't recognized anymore, aswell my IMEI and Baseband are missing.
I've had that problem before, so flashed stock rom and restored a TWRP Backup containing only my EFS folder.
This has solved my problems in the past, but now nothing happens.
I have a TWRP backup aswell as a copy of the EFS folder.
Has someone else faced the same problem or knows how to fix it?
Thanks in advance.
No one?
Try to restore efs folder manually with root explorer
Sent from my GT-I9500 using XDA Free mobile app
I'm trying right now, but I am confused because the restore with TWRP doesn't do anything to my EFS folder.
Ok, I copied the EFS folder from my microsd back to the phone but nothing changed :crying:
Have you tried flashing back to stock with Odin? I've heard that can sort out IMEI problems and the sorts.
Even if it doesn't it gives you a clean phone to work with, so you can eliminate any rom problems.
I flashed the stock rom, as well as different modems trough odin, but nothing changed. But I'm wondering why the TWRP restore doesn't show any result.
Sent from my Nexus 7 using Tapatalk
I hope you can recover your phone!
Sent from my GT-I9505 using XDA Free mobile app
kingstark666 said:
I hope you can recover your phone!
Sent from my GT-I9505 using XDA Free mobile app
Click to expand...
Click to collapse
Thanks Mate, I'm still trying. If not, I found a service to repair it for 25 Euros but I hope I will be able to do it myself.
Try to Download another stock rom and before flashing it do a full wipe, including formatting data and cache. Something similar happened to me a few days ago. I've flashed a russian rom and problem solved, but I have the i9500 model.
Sent from my GT-I9500 using XDA Free mobile app
I flashed a 4 Part Rom with full wipe already, but nothing changed.
Sent from my Nexus 7 using Tapatalk
K40S said:
I flashed a 4 Part Rom with full wipe already, but nothing changed.
Sent from my Nexus 7 using Tapatalk
Click to expand...
Click to collapse
Not sure if this will work, of it you've tried it already, but have you tried a different version of TWRP?
I did actually, but I'm going to try a older version too and see if it works.
Sent from my Nexus 7 using Tapatalk
Ok, tried restoring with TWRP 2.500 and it shows me failed, contrary to TWRP 2.7.
With TWRP until 2.6.3 it shows me failed, 2.63 and 2.7 show me a succesful message.
LOL it just started working again without me doing anything :highfive::laugh:

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