Major problems after flashing "stable" kernel. - Nexus 7 Q&A, Help & Troubleshooting

Hey guys, I'm suffering massively after flashing faux's kernel. It started off when I rebooted the device and it took me to device setup. I thought it was a malfunction, so I went back into recovery and flashed my backup that I had made minutes before. But the same thing happened. It took me back to the setup screen. So I decided to wipe and flash the ROM again (pa 2.5). And everything seemed fine until I checked the kernel status. It still had the same kernel as before (faux123). I thought I had made a mistake somewhere so I decided to download and flash a new kernel. I downloaded it but after I went into recovery I couldn't find the downloaded file... So I rebooted and downloaded the kernel onto my PC and transfer it to my tab via USB. I rebooted into recovery and flashed the kernel over fastboot... But to no avail. When I rebooted the device it took me to setup again. This is when the screen went crazy. It started flashing and and going nuts. I thought it was the kernel I just flashed, So I rebooted and the tab was fine but it took me to setup again. I went through the rigmarole of setting up a 4th time and checked my kernel status and guess what? Still faux123. Now I really don't know what it wrong. I've tried using the nexus root tool kit v1.5.2 but still to no avail. I've tried manually pushing the files over adb but still Nothing... I've sent faux a message asking for help but haven't received a reply yet.
Any help would be great guys.

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N7 wont boot after flashing Kernel - borderline bricked

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.

[Q] Can't wipe or factory reset encrypted phone

I made the mistake of encrypting my phone and am now paying the price. It is rooted and I had installed the Google Edition 4.4.2 ROM by Danvdh, Kryten2k35 & Ktoonsez. I'm using TWRP 2.7.0.1.
I first tried going into recovery and doing a factory reset and got the an "Unable to mount '/data'" error, followed by a big red FAIL. So I rebooted into the system and tried to do a factory reset from there. Went through all the steps, phone rebooted into recovery and I got the same error - unable to mount.
So I did a bit of searching on the forums here and someone had suggested using the format option in TWRP. So I did that and it seemed to work - did not get the dreaded unable to mount error. So I tried flashing the new rom (the updated version from a couple of weeks ago). Got a message indicating it was successful. Rebooted, and to my dismay, got the prompt for the encryption password. Saw the little line drawing Android, then... nothing - I found myself in brick land.
Managed to get back into TWRP and, based on another post I found, tried Advanced Wipe, selecting everything except Micro SDcard and USB-OTG. Tried installing the new ROM again, says successful, but nothing has changed - I still boot into blackness after inputting my encryption password.
Not sure what else to try. Any suggestions would be most appreciated.
not_su said:
I made the mistake of encrypting my phone and am now paying the price. It is rooted and I had installed the Google Edition 4.4.2 ROM by Danvdh, Kryten2k35 & Ktoonsez. I'm using TWRP 2.7.0.1.
I first tried going into recovery and doing a factory reset and got the an "Unable to mount '/data'" error, followed by a big red FAIL. So I rebooted into the system and tried to do a factory reset from there. Went through all the steps, phone rebooted into recovery and I got the same error - unable to mount.
So I did a bit of searching on the forums here and someone had suggested using the format option in TWRP. So I did that and it seemed to work - did not get the dreaded unable to mount error. So I tried flashing the new rom (the updated version from a couple of weeks ago). Got a message indicating it was successful. Rebooted, and to my dismay, got the prompt for the encryption password. Saw the little line drawing Android, then... nothing - I found myself in brick land.
Managed to get back into TWRP and, based on another post I found, tried Advanced Wipe, selecting everything except Micro SDcard and USB-OTG. Tried installing the new ROM again, says successful, but nothing has changed - I still boot into blackness after inputting my encryption password.
Not sure what else to try. Any suggestions would be most appreciated.
Click to expand...
Click to collapse
Can you go into download mode, revert back to a stock rom (or flash a stock one or something) and turn encryption off? edit: on further research it looks like the only way to completely unencrypt is to reset your device. dunno if that's something you'd want to try, but considering you already wiped multiple times.. i'd say try it?
Also what carrier do you have? That's pretty important. AT&Ts i337 and Verizon's variant cannot flash AOSP roms (more specifically, kernels) due to the bootloader being locked. That might be the issue you're experiencing? I looked up the ROM and it's using ktoonsez kernel, so I imagine that'd be why. Someone just made a version that does not include the kernel and has multiple issues the ROM you're trying to use fixed here.
Rhymey said:
Can you go into download mode, revert back to a stock rom (or flash a stock one or something) and turn encryption off? edit: on further research it looks like the only way to completely unencrypt is to reset your device. dunno if that's something you'd want to try, but considering you already wiped multiple times.. i'd say try it?
Thanks - that's exactly what I've been trying to do. I haven't tried reflashing back to stock with Odin though. Hmmm...
Also what carrier do you have? That's pretty important. AT&Ts i337 and Verizon's variant cannot flash AOSP roms (more specifically, kernels) due to the bootloader being locked. That might be the issue you're experiencing? I looked up the ROM and it's using ktoonsez kernel, so I imagine that'd be why. Someone just made a version that does not include the kernel and has multiple issues the ROM you're trying to use fixed here.
Click to expand...
Click to collapse
Bell, up here in the Great White North. I don't think locked bootloader is an issue - I was on the previous version of Danvdh's ROM, and everything was hunkydory. I just made the unfortunate decision to encrypt. Big mistake.
May try flashing back to stock. Nothing to lose, at this stage...
Thanks!
Hey just wanted to mention for the benefit of anyone else who got into this bind, flashing back to stock using Odin did the trick. Still wouldn't boot, but then I rebooted into stock recovery and did a factory reset, and finally was able to reboot back into stock. What a nightmare. Ugh. Thanks for the tip though - never occurred to me to try to go back to stock. Lesson learned though - no more encryption for me!
not_su said:
Hey just wanted to mention for the benefit of anyone else who got into this bind, flashing back to stock using Odin did the trick. Still wouldn't boot, but then I rebooted into stock recovery and did a factory reset, and finally was able to reboot back into stock. What a nightmare. Ugh. Thanks for the tip though - never occurred to me to try to go back to stock. Lesson learned though - no more encryption for me!
Click to expand...
Click to collapse
Good to hear. Should be able to flash to the rom once again no problem now that it's unencrypted!

Soft brick - Need some guidance

It's been awhile since I changed anything on this phone, I've been running CM11 with no issues. The wife was playing with my phone which is on cm12 and wanted me to upgrade it. Great, I hate having to touch her phone but ok.
1. Did a straight upgrade to CM12 nightly (couple nights ago build) with gapps from CM site. After the install everything crashes on the initial load, it's like the baseband is jacked and doesn't know how to handle the new google play services because everything crashes.
2. Went back and wiped internal everything this time, re installed nightly and gapps. No change.
3. Tried step 2 a couple more times and different gapps from PA and other random sites (micro, light, stock versions) and then TWRP just died on me. It's asking for a password when I first go in so now I'm stuck there. Tried to use ODIN to install the latest TWRP after converting it with another script found here (i'll find the link).
so, I'm probably going to have to use ODIN to restore some stock version of S4 ATT but I really don't know which one is stock that would work with CM12. I don't want to get caught in the safestrap crap of dual boot and whatever else. Any help is greatly appreciated.
You'll need to Odin the mdl firmware in Odin. Be careful as it will want to update itself after you flash it. See sammobile.com for the firmware.
Sent from my Nexus 9 using XDA Free mobile app
Awesome, thanks!
Flashed the stock, towelroot, twrp from google play and cm12 nightly. Perfect and back where I left off. Thanks!!
Ok.. I did a bad thing I guess. after working for a couple weeks I tried to reset the phone while cm12.1 was installed. All it did was keep restarting TWRP and was stuck there. So I figured there was an issue with the twrp install or something whatever, I went to flash back to stock mdl in odin. Instead of selecting PDA I selected Phone and it failed on the first attempt. Then I selected PDA and it installed correctly (Said passed). Now I'm stuck on the AT&T logo on boot. I tried to reinstall the stock rom again and the same results. Where do I go from here??!?
kronikwisdom said:
Ok.. I did a bad thing I guess. after working for a couple weeks I tried to reset the phone while cm12.1 was installed. All it did was keep restarting TWRP and was stuck there. So I figured there was an issue with the twrp install or something whatever, I went to flash back to stock mdl in odin. Instead of selecting PDA I selected Phone and it failed on the first attempt. Then I selected PDA and it installed correctly (Said passed). Now I'm stuck on the AT&T logo on boot. I tried to reinstall the stock rom again and the same results. Where do I go from here??!?
Click to expand...
Click to collapse
Boot into the stock recovery and do a factory reset
Sent from my Nexus 9 using XDA Free mobile app
Ok, factory reset worked on the second try. Sent it in to a boot loop on the first go around, odd. Thanks!

[solved] Phone is acting weird ... random reboots shortly after boot

Hi there,
I started this topic because I am out of options and I don't know what to do at this point.
My Phone is a XT1562 DualSim.
I recently flashed http://forum.xda-developers.com/moto-x-play/development/rom-spetrum-mm-volte-t3462690 and I also installed "MODEM" (MPD24.107-70) from page 1, but not right away.
First I wiped everything expect "internal storage". The phone booted but it restarted during boot (which might be okay) but then it rebooted again during boot. The boot process finally finished and I got to the screen "Android is starting - Optimising app x of y." The phone rebooted even during that process and that is definitely not normal I think. So after a couple of reboots android did finally optimise all apps but the phone did still reboot withing the first 30 seconds after it was booted.
From here I did a lot of testing and doing. These are my findings:
- When I set phone to flight mode / airplane mode it does NOT reboot... Hurray!
- When I flash another ROM (Official CM 13, http://forum.xda-developers.com/mot...m-cyanogenmod-13-preview-moto-x-play-t3252255) the phone runs like a charm, NO reboots whatsoever.
- - But as soon as I flash gapps and the phone is booted, I get the reboots again (usually within the first 30 seconds).
- - Again setting the phone to flight mode prevents itself from rebooting.
- - Apparently it doesn't matter what version of gapps I flash. I even tested the light version (ARM, 6.0, Pico, from http://opengapps.org/). It still reboots. I also tried gapps mini and stock.
Oh and I don't think its MODEM (mentioned above) related, because I faced these problems already before I installed / updated the MODEM. Well I thought its MODEM related, that's why I went back to MODEM stock version MPD24.107-52 but that did't help either. I should mention that I am not sure if I had MPD24.107-52 installed originally but spetrum (the rom developer) pointed me to that version: http://forum.xda-developers.com/showpost.php?p=69129552
I also restored my working TWRP backup from an android I used for month and guess what, yep, reboots
brrrrr this is frustrating
I never experienced that before and frankly I am out of ideas.
Anything is welcome and appreciated
Thank you
If nothing helps reflashing the whole firmware is always an option
minimale_ldz said:
If nothing helps reflashing the whole firmware is always an option
Click to expand...
Click to collapse
Thanks I haven't done that.
To be clear, you mean firmware as in stock rom / factory image?
I always go back to flashing stock rom with rsdlite whenever things went wrong and I can't solve it by flashing small fixes.
rancor187 said:
Thanks I haven't done that.
To be clear, you mean firmware as in stock rom / factory image?
Click to expand...
Click to collapse
I mean full stock firmware you flash with fastboot or RSD. Roms are usually only system + kernel, so not very helpful in your case
Guys! Good news. I did go back to stock firmware and from there to official CM13. Of course I had to root and install TWRP again but it was worth it.
I lost a few days spending my time with it but I'm glad its all good now thanks to you.

SM-P580 blackscreen problem

So tl;dr version - i was using my tablet, saw an update to magisk, installed it, now it boots to black screen while running sambones rom
[SM-P580] [BQK1] SaMBoNeS
TWRP 3.2.3.0 --> 3.3.1.0
longer story:
i was trying to get a game to run, it wasnt...and realized it has been a while for a restart, so i checked to see if anything needs to be updated and saw magisk needed an update. i didnt note what version it was before but it was a version or two earlier than what it was trying to install.
rebooted to blackscreen no samsung logo
have tried restarting a dozen times, booted to TWRP, tried to force normal system boot through the UI, nothing.
I tried installing a new kernal [SiriKernel], it made it to the samsung logo, waited 15 - 20 minutes and it never made it past. restored a backup using TWRP
updated TWRP to 3.3.1.0, still no luck.
i had this problem a long time ago, and cannot figure out how i fixed it....it may have fixed itself but it isnt this time. any advice would be appreciated. I am trying to avoid wiping and starting again if at all possible because the problem seems familiar. also trying to stick to a rom for use with adaptive storage. if i do have to wipe if that can be done on a newer stock OS that's fine as well but last time i messed with this tablet it wasnt

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