Stuck in recovery mode loop - Nexus 7 Q&A, Help & Troubleshooting

Hi guys
i have a custom rom, nougat 7.1 installed and its been working fine. last night i installed an aftermarket battery replacement as the other wasnt holding a charge. after turning on by simply pressing the power switch it went straight to twrp recovery and kept doing so. this morning i cleared the cache and data to start again which was a bit of hassle and it then booted fine. however, i just restarted again and its in the same loop.
i have checked for any obvious obstruction under the rear case that could be pressing against the volume keys but there isnt anything.
any ideas?
cheers

Did you try to reflash everything, e.g. also the ROM?

AndDiSa said:
Did you try to reflash everything, e.g. also the ROM?
Click to expand...
Click to collapse
i didnt really want to do that unless i really had to. as i say, before the battery swap it was fine

But if you cleared already cache *and* data all your data is already lost, e.g. it's like a factory reset. So flashing a new ROM will not worse the situation ...

AndDiSa said:
But if you cleared already cache *and* data all your data is already lost, e.g. it's like a factory reset. So flashing a new ROM will not worse the situation ...
Click to expand...
Click to collapse
well, i just went to restart and was going to reinstall but it booted properly. i then did a restart and again it booted fine. i dont get it.

Related

[Q] Phone restarting and can't connect

HELP! I've been using my LG G2 for around 3 months with mo problems at all. I'm rooted with Janjan's custom rom. This morning my phone froze, so i rebooted it. From then on i could not connect to my mobile network as well as Wifi networks. I can see the phone is also scanning the media files, and i cannot open any programs. The phone then restarts itself after about 20 seconds. If i turn the screen off, i cannot turn it back on.
I have already tried restoring to a backup i had on CWM, but the same thing happens.
Has anybody experienced this before? Any suggestions on what to do????
Thanks!
**Edit.
Was able to snap this pic before it rebooted on me again. The "Error" message, stays on even if i exit Settings.
Flash back to stock using this method http://forum.xda-developers.com/showthread.php?t=2432476
But before you try to return to stock, make sure you completely wipe the device in CWM.
MalignantQuechnitlan said:
Flash back to stock using this method http://forum.xda-developers.com/showthread.php?t=2432476
But before you try to return to stock, make sure you completely wipe the device in CWM.
Click to expand...
Click to collapse
hey thanks for the reply. I've tried returning it to stock. Wiped cache and factory reset in CWM, and followed the tutorial to return to stock.
After the phone restarted, it showed stock boot animation and is totally stock now.
BUT the problem is still there. My phone continues to reset itself every 10-20 seconds, and still cannot connect to any networks.
djlpio said:
hey thanks for the reply. I've tried returning it to stock. Wiped cache and factory reset in CWM, and followed the tutorial to return to stock.
After the phone restarted, it showed stock boot animation and is totally stock now.
BUT the problem is still there. My phone continues to reset itself every 10-20 seconds, and still cannot connect to any networks.
Click to expand...
Click to collapse
Hmm, that is odd. Do you have a back up of the phone before you changed anything? i.e. a stock backup?
because it seem you may have wiped your EFS partition by accident.
No i don't have any backups, The only back up i had was a stable version of the ROM i was using. And it seems like when i reverted back to stock, all the files in the internal memory is erased as well.

s5 not working after cahnging to art

hi
ive changed my phone in developers options from delvik to ART and now if I turn it on it sats"upgrading android" does "optimization for few min and then touchwiz crashes and the whole UI dosent go on...therefor I cant reach the menu to undo the change...safe mode dosent come up niether...I have no idea whats wrong,,,
the device is unrooted with everything fresh new and no 3rd party apps(only from the playstore)...
help!!!!
liavo555 said:
hi
ive changed my phone in developers options from delvik to ART and now if I turn it on it sats"upgrading android" does "optimization for few min and then touchwiz crashes and the whole UI dosent go on...therefor I cant reach the menu to undo the change...safe mode dosent come up niether...I have no idea whats wrong,,,
the device is unrooted with everything fresh new and no 3rd party apps(only from the playstore)...
help!!!!
Click to expand...
Click to collapse
Have you tried rebooting the phone? Or wiped cache in recovery. Dalvik is imo still more stable and faster then ART atm.
gee2012 said:
Have you tried rebooting the phone? Or wiped cache in recovery. Dalvik is imo still more stable and faster then ART atm.
Click to expand...
Click to collapse
I have tried rebooting and safe mode...
then I wanted to try factory reset but excidently got into download mod insted...I tool the chance of a brick and took the battery out while in download mode(since I didnt have files to burn via odin) and the phone just turned on using delvik and didnt show any problem...so the issue is solved,,,I have no idea how and why but it is...
liavo555 said:
I have tried rebooting and safe mode...
then I wanted to try factory reset but excidently got into download mod insted...I tool the chance of a brick and took the battery out while in download mode(since I didnt have files to burn via odin) and the phone just turned on using delvik and didnt show any problem...so the issue is solved,,,I have no idea how and why but it is...
Click to expand...
Click to collapse
I had ill effects when switching myself, found that best way to test it was to switch it to ART right after a hard reset or flashing stock via odin. Im sure just wiping cache and dalvik would have fixed it, but i was returning the phone for USB port issues anyhow so i flashed back to stock. not sure if clearing the android files on the internal storage or the cache/dalvik being wiped fixed it, but it ran find after that with no FC's etc. As stated though, i havent really noticed much if any improvement. Still too soon in its infancy to probably see much from it yet lol.
Good luck!

Massive softbrick (haven't found a solution yet)

Hello everyone,
So here's my story: I got a 6P short after release and it's been amazing. After switching from a S6 I couldn't be happier until 3 days ago.
I was playing around with my phone (checking for updates on the play store if I recall correctly) and I was going to switch from 4g to wifi. I went ahead and pulled down my notification shade and went to press WiFi but misclicked and hit Hotspot which was below it. My phone suddenly froze big time and this is for the first time ever since purchase.
At first I thought I'd wait it out since the device was completely unresponsive, home button didn't work and neither did anything on screen. Buttons didn't make a difference either. 10 minutes went by and I ended up force restarting by holding down power + volume up. First part of my bootup went fine but when it got to the android boot animation after I put in my pin to allow the device to start it dropped from the smooth usual framerate down to 1 frame every 10-15 seconds and it slowed down further until it came to a complete halt around the time the android letters appear.
My first thought was corrupt rom so I went ahead and wiped data from the stock recovery. I was running completely stock with no modifications whatsoever. That didn't do anything. Phone still froze in the same boot phase. Desperate I unlocked bootloader to flash a clean fresh image to try to fix it and to my surprise that didn't change a thing.
As I was getting pretty desperate already I had one more idea and that was to flash up to the Dev preview. To my huge surprise it booted and I jumped from excitement. So I started setting up my phone again. I got past the prompt to insert sim card and I was now at the screen to choose a wifi network. As soon as I clicked into that the phone froze up again and at that point I lost all hope.
I wiped data in stock recovery and shut the phone down for the night. On day 3, today I woke up and tried starting the phone and it worked as if nothing had happened. I went through the setup and set up my phone on the N preview. At a certain point I was planning to go back to the latest official build but for now I was happy my phone was back from the dead. Later today I tried to restart my phone to clear all running apps etc and it froze up on boot.
I'm losing all hope that I'll be resolving this myself so I'm reaching out to the community to see if anyone's had this happen to them before and hopefuly for a solution. It's still under warranty so I can eventually send it back to the retailer but I'd rather not have a phone for 3 weeks.
Any and all help is appreciated.
Thank you for reading through my long and probably pretty boring story!
Have you tried flashing the factory image? If yes, did you made sure to wipe/erase the system, boot, vendor, and cache partition before flash the corresponding img files?
To the OP, is there any reason you did not flash to release version 6 instead of Dev preview ?
Also, any reason you can not simply do the "unenroll" from https://www.google.com/android/beta ?
It will require you to setup certain settings again as you will be back to a "factory reset".
DJBhardwaj said:
Have you tried flashing the factory image? If yes, did you made sure to wipe/erase the system, boot, vendor, and cache partition before flash the corresponding img files?
Click to expand...
Click to collapse
DJBhardwaj, i haven't specifically erased those partitions. I was under the impression wipe userdata along with reflashing did that. I will try that tonight when I get home!
Xdafly, I only updated up to N as a last resort because at first I had a locked BL. I was planning to unenrol but that would've been too late as it self bricked after a restart.
DJBhardwaj said:
Have you tried flashing the factory image? If yes, did you made sure to wipe/erase the system, boot, vendor, and cache partition before flash the corresponding img files?
Click to expand...
Click to collapse
Well I just did the erase thingy and my phone booted but wifi won't turn on. Enabling hotspot doesn't brick anymore but I now suspect WiFi might've been the issue. Any tips on how to find out what it could be and possibly fix it?
Edit: 2 restarts and a factory reset later I'm back to bricked same way as before.
try safe mode
mr.dj26 said:
try safe mode
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Click to collapse
That was my first thought, that was the restart that bricked it again. Safe mode shouldn't have made a difference since I hadn't even logged into Google account for apps.
After reading the very first post; sounds like bad WiFi hardware.
All the hanging has been related to WiFi or Hotspot.
I think you should get a replacement
Sent from my Purified NexusixP
If Someone Helped You Then Dont Just say Thanks...Hit The Thanks Button!
Is your phone rooted and did you install Xposed?
Over the weekend I shutdown my 6p (stock rooted with April security patch, Xposed v80) and charged it. When it turned it back up I kept getting "Unfortunately, nfc service has stopped". Long story short: I ended up factory reset my phone and reinstalled EVERYTHING and I still got into bootloop. Then I came across
https://github.com/rovo89/Xposed/issues/113
https://github.com/rovo89/android_art/issues/28
At the end of the second post rovo89 (developer of Xposed) fixed the bug in V83. I wiped my 6p once more and installed everything with v83. Problem solved.
Good luck!

When WiFi is turned off I get 'Unfortunately System UI has stopped'

This is on two standard Galaxy S5's, with standard ROM, etc - not rooted, or anything else.
Every time I turn off WiFi, or enable Mobile Hotspot, I get 'Unfortunately System UI has stopped'.
To fix I have to Power off/on the phone.
(Turning on WiFi is no problem, just turning it off.)
I have gone into 'Safe Mode', and same issue, so it looks to not be a bad App.
I have also uninstalled 'Google' updates, and again no change...
Any thoughts?
All of a sudden my S5 showed the exact same error message for no aparent reason... I didn't do anything, and now I can't use my phone at all because of that bug. It happens on every boot so I can't even unlock my phone. Tried reinstalling everything, ROM, recovery, kernel, with/without root = still same, what just happened here??
EDIT: Same thing if I'm in Safe Mode -_-
Seeing noone knows a solution here's what I did yesterday.
1. Backed up all my stuff from internal storage to the sd card
2. Did factory reset in TWRP recovery
3. Flashed completely stock official firmware from Samsung
4. Waited for it to boot up and try to restore some of my settings (it restored all folders on their places, made same amount of home screens as I had before the reinstall and downloaded all of my previously installed apps from the Play Store, ofcourse without the cracked ones, and it also restored most apps' data as well so it's not as bad as you may think to factory reset and reinstall everything)
5. Started rooting, flashing TWRP again, installing Dolby Audio, Xposed and everything I had before, took me one full day to set it up as it was before.
Now when I set it up I always make a nandroid backup from when things are working fine, in case it goes crazy for no reason again... Good luck!
when the wifi radio is acting weird, a dirty flash of your current ROM susually fixes is as its probably a radio issue. Id do that before doing anything drastic like the boot-n-nuke Odin flash and starting from scratch (which will fix that issue)
I don't think I have a ROM issue, as I have two S5's, and both have the same issue... and both are standard ROMs.
I will do a factory re-set on one at some point, but this looks to be a 'simpler' issue.
I have tried a full Cache delete, as well as other 'clean' processes.
Nothing works.
I tried to re-flash my stock ROM as @youdoofus said but still had that annoying popup. Try everything you can think of, if all else fails, reset.
koragg97 said:
I tried to re-flash my stock ROM as @youdoofus said but still had that annoying popup. Try everything you can think of, if all else fails, reset.
Click to expand...
Click to collapse
well, you can wipe cache, and dalvik 3x each (not kidding about the 3x each), then dirty flash the rom, pray to the gods of android, reboot. If failure occurs, its Odin Nuke time unless you want to try to flash an individual radio file by itself (not recommended)

Freezing and rebooting

Classic "my phone keeps freezing and rebooting". I am quite in the know about flashing roms and such.
It started on the stock firmware 6.1.1 (i think it was). I dd factory resets, cache wipes the lot. It would still randomly reboot.
So i flashed Telstra version of 7.0. Still froze every now and then. Did the same things as above.
Flashed TWRP and wiped everything, flashed Renovate Rom and the bootloader for it, Still did it. Numerus factory resets and wipes of everything. It would freeze at any point from startup, to having setup the phone and making phone calls or on facebook or whatever. It would even freeze in twrp, or loading twrp.
I found that the data partition was corrupt so i re partitioned to ext4. Still nothing. I reformatted every partition so the phone was a complete brick with nothing on it and after flashing clean again it would still do it.
Whats the issue that I'm missing, or is there a way to log so i can find where it keeps getting stuck? It gets hot and blue light flashes and i have to hard reset it or sometimes i have to let the battery drain so i can turn it back on again.
pls help?
Hmm i will give you an advice so you dont have to wait for your battery to drain...just press volume down and power button for like 5 secs and phone will force boot. Anyway back to your problem...did you tried flashing latest stock samsung firmware?
raz_il_dio said:
Hmm i will give you an advice so you dont have to wait for your battery to drain...just press volume down and power button for like 5 secs and phone will force boot. Anyway back to your problem...did you tried flashing latest stock samsung firmware?
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Click to collapse
This advice doesn't work with my phone even with holding the buttons for 30 secs and more. For rebooting I can only wait until the battery is completely drained. With little hope for another way shortening time to the next reboot any help is appreciated.
Same here...experiencing the same prob...
Same problem.
Sent from my Redmi Note 4 using Tapatalk
smallcapsicum said:
Classic "my phone keeps freezing and rebooting". I am quite in the know about flashing roms and such.
It started on the stock firmware 6.1.1 (i think it was). I dd factory resets, cache wipes the lot. It would still randomly reboot.
So i flashed Telstra version of 7.0. Still froze every now and then. Did the same things as above.
Flashed TWRP and wiped everything, flashed Renovate Rom and the bootloader for it, Still did it. Numerus factory resets and wipes of everything. It would freeze at any point from startup, to having setup the phone and making phone calls or on facebook or whatever. It would even freeze in twrp, or loading twrp.
I found that the data partition was corrupt so i re partitioned to ext4. Still nothing. I reformatted every partition so the phone was a complete brick with nothing on it and after flashing clean again it would still do it.
Whats the issue that I'm missing, or is there a way to log so i can find where it keeps getting stuck? It gets hot and blue light flashes and i have to hard reset it or sometimes i have to let the battery drain so i can turn it back on again.
pls help?
Click to expand...
Click to collapse
Sounds like you need your motherboard replaced i had the same issues on marshmallow thought the nougat update would fix it but realized it was a hardware fault not software..left it in store to get fixed and on repair sheet it said faulty motherboard..
Sent from my SM-G935F using XDA-Developers Legacy app
As i know some S7 have motherboard hardware problem, mine has too, what help? warranty and they replaced motherboard. But if you root, you can say good bye to warranty, they look at knox first with this problem.

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