TL;DR: I have flashed the stock 4.2.1 image through fastboot, and yet my n7 wifi still reboots continuously at the google screen with the little unlocked lock.
Background: I have had the device for about 3 months, no real problems with it before this. I was reading yesterday night and i fell asleep, and thus instead of being on my desk all night the device was under a blanket. When i woke up, I opened the cover and found it on the google screen with the lock. It was warm, but not incredibly so. I thought it was weird that it had rebooted and apparently frozen, but i held down the power to turn it off. when i turned it back on, it started the google screen, then went black, then started the google screen again. Seems like there may be some sort of a kernel issue that is keeping it from booting. The next thing i did was to go into recovery (had CWM at this point, and it was rooted as well but that's a moot point if i can't get into the system.) and i did a backup, then wiped data and did a restore from the backup that i had just made. after rebooting, it made it all the way into the system, and seemed ok. I set it down, and a few moments later it turned off and started doing the loopy google screen thing again. Next, I went into recovery and wiped data/factory reset, and tried to boot up. no luck, still looping. Next, i grabbed the 4.0 toolkit from the dev section and tried to flash the stock recovery from that, but it was proving troublesome so i just downloaded the image myself and fastbooted then replaced cwm with the stock recovery, wiped everything, and flashed the 4.2.1 image. that should have worked, from what i understand, but no, still being loopy. I re-wiped and flashed, tried 4.1.2 instead, that didn't work, and i re-did 4.2.1. after flashing 4.2.1 and then leaving it boot looping for a little while, i noticed that it sometimes made it into the boot animation and then the animation froze and it rebooted and looped more. after a few more tries, powering it off, leaving it for a few min, and powering it on again, it booted all the way to the welcome screen to pick a language and then froze. some number of loops later, it made it all the way to picking a wifi network and froze. I have yet to make it past that point. Thinking it may help, i fastbooted CWM onto the device, so i have a more capable recovery now. I am now going to look into pushing a non stock rom to the device to see if that will help at all.
Any ideas on what on earth could have caused this? Was it just that the device was a little warmer than usual for a while?
Any ideas on how i can fix this? Much appreciated!
Lastly, should i consider looking at sending it back to google? I didn't think there was anything wrong with the hardware, but i'm not sure.
Thanks!
Update: After leaving the system repeating it's loopy boot thing for about 45 min, it seems to have finally booted into the system, and has yet to reboot again. I have no idea why this happened in the first case, nor why this finally worked in the end, but so far it seems ok.
More: Ok, so it still seems to be looping a lot. I have no idea why still. I'm having trouble getting it to boot back into the system, so hopefully something helps fix this.
Ok, so a day later it seems to have settled down such that there's very little looping on the google logo screen any more; now it just tends to randomly reboot when in use. this is quite frustrating, but seems more similar to what others have reported to be the case with 4.2.1. oddly, i never had these reboot issues before it decided to fail the first time, so i'm not sure if this is just because ii'm on 4.2.1. I may look at flashing back to 4.1.2 and staying there, i suppose it can't hurt. does anyone else have any ideas as to what could be going on?
Related
Okay so I finally got my shiny new Nexus 32GB a couple days ago. Rooted it last night no problem. This morning I flashed Trinity Alpha4. worked great but my OC/governer/etc settings wouldn't stick. So I tried to flash the latest build of Faux Kernel. After flashing it got stuck in a boot loop. So I got back into Recovery and flashed Trinity back on again. Now it won't boot at all. After the splash screen the device completely locks up at a blank black screen. Went back to Recovery, wiped cache/dalvik, reflashed Trinity. After going through the "Android has been upgraded, optimizing apps" thing, it got stuck on "starting apps". After a couple min. I forced it to reboot, and again just gets stuck at a blank screen. I apparently completely forgot to do a Nandroid backup which I realized when I tried to restore it back lol.
Anywho, any thoughts on getting the thing to boot? Bricking it 2 days after I got it home is not my idea of a good time.
thebullfrog said:
Okay so I finally got my shiny new Nexus 32GB a couple days ago. Rooted it last night no problem. This morning I flashed Trinity Alpha4. worked great but my OC/governer/etc settings wouldn't stick. So I tried to flash the latest build of Faux Kernel. After flashing it got stuck in a boot loop. So I got back into Recovery and flashed Trinity back on again. Now it won't boot at all. After the splash screen the device completely locks up at a blank black screen. Went back to Recovery, wiped cache/dalvik, reflashed Trinity. After going through the "Android has been upgraded, optimizing apps" thing, it got stuck on "starting apps". After a couple min. I forced it to reboot, and again just gets stuck at a blank screen. I apparently completely forgot to do a Nandroid backup which I realized when I tried to restore it back lol.
Anywho, any thoughts on getting the thing to boot? Bricking it 2 days after I got it home is not my idea of a good time.
Click to expand...
Click to collapse
You might try and flash the stock kernel which should not allow any under/over clocking or under/over volting. Otherwise flash back to stock using the manual way here http://forum.xda-developers.com/showthread.php?t=1907796 or download the Nexus 7 toolkit and use it to do the same.
Try WugFresh's Nexus Root Toolkit. It has an option to go back to stock if you're soft-bricked.
Well I just did a factory restore/wipe (because Im SO looking forward to setting everything up again...) and it made zero difference. I'll try the stock kernel if someone could point me in the right direction to find a copy of it.
NVM found it. I'll give it a shot.
Ummmm okay then. I had my N7 turned off while looking for a solution to this fiasco. I picked it up so I could flash the stock kernel, and it had turned itself back on. Not only that, but it was fully booted up. Granted it's back to the initial setup after doing a factory restore, but there we go. It automagically fixed itself. Now to spend a couple hours putting everything back how it was. Yay.
Protip children: Always. Be. Nandroiding.
Ended up "solving" this by doing a stock restore via Odin, after which TouchWiz would never load an icon (crash loop). Reinstalled TWRP via Odin, then flashed ViSiON X N3 via TWRP.
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Morning guys,
I've had some reboots lately and a weird situation last week where I had to do operating system surgery to get the thing to boot at all.... HOWEVER things were going quite well for some time, and it's been rooted and non-stock for months.
Nevertheless I woke up this morning and it was off, I figured the battery had died so I swapped batteries... It boots, it gets to the launcher and it loads the app icons then freezes and reboots... over and over again.
edit: to be clear, as soon as the slider bar touches the right-hand side the phone freezes, the vibration holds for several seconds, and then the device reboots. obviously not what one expects from this operation (having done it before). I was able to wipe the Cache separately... trying to wipe the Dalvik cache all by itself in an advanced wipe does this reboot thing.
OK I said, i will just clear and reflash this.
Going into TWRP, attempting to do a factory reset wipe just freezes, buzzes, and reboots immediately (to the not working OS)... in order to make this all stop I pull the battery, because now the button on the side won't seem to do a hardware poweroff for anything. Just ends up resetting the current reboot.
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Any advice would be helpful now. I was just going to say forget it and grab the tiniest ROM i could find and ride it out until I upgrade the device, but now I'm just concerned with getting it active. The rebooting in recovery when trying to do a wipe does not make me feel too great. First and only problem I've had with android roms.
Thanks,
Chris
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
Click to expand...
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!
Hey all! I'm having a strange issue regarding boot looping that I can't seem to find an answer to on here or anywhere else, I hope you guys can help.
So my T-Mobile Samsung Galaxy S5 (SM-G900T), purchased in May 2014, while perusing Facebook the other day, randomly shut down in the middle of perfectly normal use and started bootlooping. I had never had the problem before. The device had been rooted for months (I forget what method I used) but it was running a stock Lollipop rom. The first thing I did was factory wipe and cache wipe through Android stock recovery. It worked!... for a couple hours. Then the bootloop started again.
I went and sought a new stock rom, believing that somehow mine had been corrupted, and flashed it via Odin. I also flashed TWRP. Clean wipes, new rom, dalvic/etc. wipes, and booted into stock Marshmallow. It worked!... for a couple hours. Then it started bootlooping again. I went into TWRP and tried to wipe just caches and whatnot, but it wouldn't start again. Long battery pulls sometimes allowed the phone to boot, but it started looping again after ~5-10 minutes.
So I installed the Twisted Lollipop but couldn't even get that to boot. I went back and found the earliest available firmware for my device (as I bought mine right after it came out) and flashed it. Wipe wipe flash wipe whatever, and a succesful boot. It was looking good! I was able to install a number of OTA updates. I was at Android 5.1 when I decided to call it a night and hold off on the further OTAs for today. Today I got up and got ready for work, all's well. As I'm getting ready to leave, I allow Google to update some apps, and begin installing Facebook, Spotify, Cap Metro (for my area's public transit system) and maybe something else, I don't remember. Anyway, as the updates are downloading or installing and I'm checking my email, boom, crash, bootloop.
What's going on here? I've never heard of hardware causing boot loops, but could it be that? I dropped my phone (although protected by a Spigen case) earlier this summer and it cracked the screen-- could it have messed with the motherboard in some substantial way? I had noticed it getting hotter and the battery lasting less than usual, but I attributed that to the device's age.
Any help, any advice, any direction you could give would be extremely appreciated. I don't have the capital to replace the phone right now, and I use it all the time. Thanks folks!
I have a SMG870A that will not stop rebooting no matter what I do. The phone was on PK7 and has ran flawlessly for the past 3 months I've had it. Phone one day reboot and never booted up again, just bootlooped. After wiping cache/wiping data, I've had no luck. I tried reflashing the pk7 stock image from sd card, the image flashes, restarts like normal but reboots half way through the splash screen. So then I tried to Odin the phone back to OF3, no luck either. I get a pass on Odin but when then splash screen comes up, it reboots. I have a brand new battery in it, and I am not sure what else could be causing this. I have very good knowledge on flashing, as I've been doing it since the S3's came out. But this device actually has me stumped. Any help would be much appreciated!
Thanks