Random reboots after 5.0.2 upgrade - Galaxy Tab S Q&A, Help & Troubleshooting

I impatiently flashed the Korean firmware of 5.0.2 to my tablet, and after I got it switched to English, everything seemed to be working fine. However, I've been noticing that at least once an hour it reboots itself, for no rhyme or reason. I thought heavy activity caused it, but just now it was sitting there doing nothing and it rebooted itself again. Is this a known issue? Did I do something wrong?
I thought about going back to the US firmware, but when I tried flashing back, it got stuck at the Samsung logo. The only thing I could do to fix it was flash it back to Korean. Did I screw myself?

Kitkat firmware requires the data and cache partition to be wiped in recovery before it will boot.

Related

[Q] Jellybomb start up problems

The problem only happens when I reboot or turn on the phone. When it boots up, I get multiple results. A: It boots up normally (not a problem) B: When it gets to the samsung screen, it freaks out and reboots itself again and again. It's like it's struggling to boot up. One time it got to the gs 3, but then it looped back. C: This just happened today. I booted up and it went pass the samsung screen but when it got to the gs 3 screen, the screen turned a faint pink and it stayed on that screen.
This just happened right after version 8. I know 10 was messed up but on 9 and 11, this problem persisted. Also,I don't think the issue is the phone, since I don't have this problem on other Roms. If I'm wrong please let me know .
Any suggestions, advice, help, etc is welcomed.
Please... i really need help.
I suggest you start over, this will remove any corruption and gremlins you have klinging to your phone..
http://forum.xda-developers.com/showthread.php?t=1904099.. Then re root and flash anew.
Naddict said:
I suggest you start over, this will remove any corruption and gremlins you have klinging to your phone..
http://forum.xda-developers.com/showthread.php?t=1904099.. Then re root and flash anew.
Click to expand...
Click to collapse
I unrooted, went back to stock, it did a factory reset so no bugs should have been alive. I re-rooted, made a backup, did a factory reset and wiped dalvik, then I flashed the rom zip and rebooted. It gets stuck on the Gs III screen. I waited like 5 minutes and it didn't move. My battery was at 50% so I just put it on the charger and tried to boot up and it went through to the set up screen for gmail.Just to see if it was coincedental, I did another reboot but this time it got stuck again. It sounds like a system problem but i'm not sure.Like i said earlier, this only happens on Jellybomb.
Any other ideas?
Edit: I've tried switching recoveries but it doesn't fix it.
Sigh.

This doesnt quite seem like a boot loop... Help?

So my phone has been perfect for over a year. Within the first month of owning it I rooted, installed TWRP, and jumped on CM13. Been updating nightlies all year long once every week or so and enjoying the phone. Its really been perfect. Tonight after work I jump in my car, throw it on my car charger, and drive home. When I get home I notice for some reason I have no cell service (Emergency Call Only) so I reboot. That was the end. The reboot got stuck on the CM boot screen flashing the circle out around the CM face over and over and over. So, I pop the battery, try again, same thing.
Well, being that I have rooted and flashed for years now I figured Id wipe dalvik and cache. Tried that, same thing. Did a full wipe and reinstalled the nightly from my SD card. This time I thought I made progress as it set up all the apps. Then it just hangs on "starting apps" and then it sits there forever. Never boots. Doesnt loop or restart or anything, just says its starting apps.
So, jump on here and find the bootloop issue. My serial is 505x so I was wondering if maybe thats my issue. Decide to download the all in one flash zip from here...
http://forum.xda-developers.com/tmobile-g4/development/stock-h811-20i-images-kdz-flashable-t3308227
and I flash that. Stock rom works without any issue. Fired it up, logged in, no problems. Huh. Do a restart and even though I flashed that file it still shows bootloader unlocked as the LG logo comes up, and boots into TWRP as normal as well. Figured well I flashed a stock rom, lets give CM13 a try again. I download a fresh nightly through my pc and transfer it over via usb so I know its good. Full wipe, flash, reboot, hangs at "starting apps" again.
Now I am lost. The stock rom sucks and my love for this phone is based around what it is with CM installed. Am I missing something here? I really want to get back to CyanogenMod and away from the clunky slow stock rom.
Any input is greatly appreciated. Thank you all.
EDIT: Well went through the Android setup steps after flashing the stock rom so I would have a phone until this was all figured out. Turned out its not working. After setup I am not getting "Process System Isn't Reponding: wait or close" No matter what I do the phone is so slow or laggy I cant use it. Its trying to download my apps and restore my phone from my Google account but it just hangs up. No idea what to do at this point. Is my kernel messed up? Its a totally clean flash. What the heck. 3am, I give up, hopefully someone has insight in the morning. Thank you all.
ride1226 said:
So my phone has been perfect for over a year. Within the first month of owning it I rooted, installed TWRP, and jumped on CM13. Been updating nightlies all year long once every week or so and enjoying the phone. Its really been perfect. Tonight after work I jump in my car, throw it on my car charger, and drive home. When I get home I notice for some reason I have no cell service (Emergency Call Only) so I reboot. That was the end. The reboot got stuck on the CM boot screen flashing the circle out around the CM face over and over and over. So, I pop the battery, try again, same thing.
Well, being that I have rooted and flashed for years now I figured Id wipe dalvik and cache. Tried that, same thing. Did a full wipe and reinstalled the nightly from my SD card. This time I thought I made progress as it set up all the apps. Then it just hangs on "starting apps" and then it sits there forever. Never boots. Doesnt loop or restart or anything, just says its starting apps.
So, jump on here and find the bootloop issue. My serial is 505x so I was wondering if maybe thats my issue. Decide to download the all in one flash zip from here...
http://forum.xda-developers.com/tmobile-g4/development/stock-h811-20i-images-kdz-flashable-t3308227
and I flash that. Stock rom works without any issue. Fired it up, logged in, no problems. Huh. Do a restart and even though I flashed that file it still shows bootloader unlocked as the LG logo comes up, and boots into TWRP as normal as well. Figured well I flashed a stock rom, lets give CM13 a try again. I download a fresh nightly through my pc and transfer it over via usb so I know its good. Full wipe, flash, reboot, hangs at "starting apps" again.
Now I am lost. The stock rom sucks and my love for this phone is based around what it is with CM installed. Am I missing something here? I really want to get back to CyanogenMod and away from the clunky slow stock rom.
Any input is greatly appreciated. Thank you all.
EDIT: Well went through the Android setup steps after flashing the stock rom so I would have a phone until this was all figured out. Turned out its not working. After setup I am not getting "Process System Isn't Reponding: wait or close" No matter what I do the phone is so slow or laggy I cant use it. Its trying to download my apps and restore my phone from my Google account but it just hangs up. No idea what to do at this point. Is my kernel messed up? Its a totally clean flash. What the heck. 3am, I give up, hopefully someone has insight in the morning. Thank you all.
Click to expand...
Click to collapse
You really have to investigate by adb. Look into the dmesg output and logcat as well. Maybe your sdcard is corrupt or 100 other issues are possible as well. What device do you own? H811? unlocked?
.
I have rooted my lg g4 h811 and am trying to flash cm 14, after flashing it through twrp, my phone stuck in bootloop. i try o put it in recovery but it only gives me factory reset option which i did several times but still stuck on bootloop. what should i do?
kunate said:
I have rooted my lg g4 h811 and am trying to flash cm 14, after flashing it through twrp, my phone stuck in bootloop. i try o put it in recovery but it only gives me factory reset option which i did several times but still stuck on bootloop. what should i do?
Click to expand...
Click to collapse
There are several users reporting that the latest cm version bootloop the best option is to start in download mode and Flash with LGUP Stock ROM.
You could also try to boot into Download Mode and then flash the latest twrp and then Boot into Factory Reset Mode again

Unbricking a bootloop-ing Nexus 5x without losing data

Hi guys,
Need a bit of help. I was scrolling through Instagram when the phone froze, restarted, and now it just keeps restarting without being able to get past the Google logo. It did get to the colored dots ONCE after powering it down completely from bootloader. I was on stock 7.0 (but August or September security update), stock kernel, but rooted with SuperSU 2.76 and TWRP 3.0.2-1. I just downloaded the factory image and flashed the bootloader, boot, vendor, cache, system (radio is the same), and TWRP 3.0.2-1 and it's doing the exact same thing. I can't even boot into TWRP, it bootloops at the Google logo just the same. EDIT: I was able to get into TWRP once but the phone froze again and rebooted!
I would really like to recover my data partition if at all possible. Please help!
EDIT: I put it in the freezer for half an hour and when I took it out it was able to boot again. Copying my stuff now. Will update when it inevitably breaks again...
EDIT2: Once it warms up it freezes and starts to go into a bootloop again. Damn, most likely a hardware issue.

LG G3 D855 blackscreen right after booting logo

Okay, so i have an LG G3 D855, few months ago it worked like a charm.. But then shortly after i started noticing random reboots everytime during using apps. Then it went in bootloop. I tried to turn it on again, entered recovery screen, choosed factory reset and it did, but then it went through the same process, random restart. Eventually stuck up in factory resetting screen. However i think i made mistake when the phone freezed in reset screen : pulling out the battery. later it lost its IMEI & kept heating up (probably tried to find its cellular framework of some sort).
Days passed, several factory resets has been done. Now the phone's at its worst state. It refused to get past the boot logo. everytime it finishes booting, the display just goes black, tried to plug usb charger, chargin indicator doesn't want to turn on, neither after i pulled out the battery. I have to leave it a few days to get it working again, but it keeps persisting.
Addition : The phone's also feels warm post the blackscreen.
Any thoughts whether can this be fixed or i have to replace something inside the phone's board?
thanks in advance.
Sussudioo said:
Okay, so i have an LG G3 D855, few months ago it worked like a charm.. But then shortly after i started noticing random reboots everytime during using apps. Then it went in bootloop. I tried to turn it on again, entered recovery screen, choosed factory reset and it did, but then it went through the same process, random restart. Eventually stuck up in factory resetting screen. However i think i made mistake when the phone freezed in reset screen : pulling out the battery. later it lost its IMEI & kept heating up (probably tried to find its cellular framework of some sort).
Days passed, several factory resets has been done. Now the phone's at its worst state. It refused to get past the boot logo. everytime it finishes booting, the display just goes black, tried to plug usb charger, chargin indicator doesn't want to turn on, neither after i pulled out the battery. I have to leave it a few days to get it working again, but it keeps persisting.
Addition : The phone's also feels warm post the blackscreen.
Any thoughts whether can this be fixed or i have to replace something inside the phone's board?
thanks in advance.
Click to expand...
Click to collapse
Reflash with lgup.
Remove the SIM card and the memory card. try again. Full wipe system data ...
I've had the same problem. I've tried. Worked
found the problem. memory card
EDIT: Some kind of voodoo happened right now! I was about to unbrick again and wanted to give the phone a try to boot before. And it did! So no problem at the moment, but still a strong feeling of uncertainty...
EDIT: Phone is still randomly rebooting and gets stuck in bootloops
-----
Hej guys, I really need your advice,
but first things first: Thank you very much for all of your wonderful work on custom roms and further support of older devices. I've been reading here for a few years now and was more or less happy to have up-to-date-roms for some of my phones.
Now I'm facing quite the same problem like OP did / does. Everything started with me, following this guide to root my D855 (coming from stock rom) and flash TWRP: you tube.com/watch?v=8VOgM3jLas4 (Note: The guide told me to flash "3__HacerPermisivo.zip" for updating the kernel, which I did.)
Next, I flashed a newer version of TWRP ("twrp-3.2.3-0-d855.img") than the one provided in "2__AutoRecMMD855.apk" by the guide above. I wiped dalvik and cache and after that, I flashed "lineage-15.1-20190410-nightly-d855-signed.zip", wiped dalvik and cache again and flashed "open_gapps-arm-8.1-pico-20190411.zip". I wiped dalvik and cache again and told TWRP to reboot.
Here is, where problems began to occur. The phone got into a bootloop, showing up the LG splash screen again and again instead of booting into LOS correctly and set it up. At some point I decided to remove the battery. When I did, at the same time LOS was just going to load, which I saw because of its beginning boot animation. So I screwed it up right at the wrong moment, I guess.
From here, the phone bootlooped every time, I wanted it to start. No battery acrobatics helped and on top I couldn't get it into recovery mode. Any attempts ended in bootloops. I think, this might be what is called a brick / to brick your device, isn't it? I found this guide to unbrick a D855 and followed its steps: open -freax.fr/guide-unbrick-your-lg-g3/
Believe me, it was a real pain in the ass! Because of me, messing up something or the phone getting stuck into a bootloop during the unbrick process, I had to do it 4 to 5 times until success... I have to say: I didn't follow the last steps beginning from "Root". Instead, I followed the guide from the beginning of my post.
Finally, I got "lineage-15.1-20190410-nightly-d855-signed.zip" and "open_gapps-arm-8.1-pico-20190411.zip" to run. I set it up and began to load some of my apps of my Play Store collection. While downloading, the phone froze, crashed and began to bootloop, from here unable to boot normally or to get into recovery mode. So I unbricked and flashed again (again several times because of bootloops before LOS first set up). When I got it to work again, I was able to install my apps without being trolled by the phone again. But scrolling through the eBay app froze the phone and it began bootlooping again...
You can believe me, I was about to throw the D855 against the hardest piece of wall, I could possibly find in my rage. The reason why I didn't give up at this point is, that I LOS-rommed two other D855s just a few days before. Those were my mom's and my girlfriend's and they work fine until today. I bought this third one for myself, because I was impressed, how good LOS worked on the D855s. On top I wanted to get rid of my Samsung Galaxy S4 (GT-I9515), because LOS kinda sucks on it, but this is another story...
So I figuered that the earlier LOS version I used for the women's phones, could solve the problem. So I unbricked again and flashed "lineage-15.1-20190327-nightly-d855-signed.zip" and "open_gapps-arm-8.1-pico-20190329.zip". And hell yeah, that did work! No bootloops, eBay worked fine, just everything was as I loved it on the other phones, I flashed. Until tonight. I've been lucky for almost two days, but tonight this happened: I plotted a route in Google Maps and saved it as a shortcut on my homescreen. I closed Maps and tapped the route icon. Freeze - crash - bootloop - no recovery mode! I wanted to start crying, because Maps has already worked fine yesterday. And it still does on the other two phones, which run exactly the same rom...
So now, I'm sitting here, not knowing what can be done further. I'm not a programmer / developper or any of those cracks providing us the newest software for old phones. So I just can do wild guesses. Maybe the moment I removed the battery the very first time after flashing messed something up very deep inside the phones internals and it can not be cured any more. Maybe some of you guys have experienced similar things and know a tweak or a simple step, I forgot. Anyway, I hope I can use my phone on LOS some day which I bought especially for this case.
Keep up the great work, folks!
Greets
I ordered a new mainboard. It should arrive within 3 weeks. I'll keep you updated.

Phone keeps Crashing on Boot animation, No iMEI, Wifi, Bluetooth. Restart loop.

This a bit of a long short story, so please bear with me for a while.
I first unblocked my Lenovo K5 Vibe Plus a6020a46 (India) in 2017 and using TWRP I had flashed the AEX Oreo v5.7 ROM. It was a great change and everything else was working fine for a long time.
Fast forward to 2020, I felt the phone was slowing down so I clean flashed AEX Pie v6.7 using TWRP, the ROM worked slick but after some time weird problems started to rise. Here's the chronology of what happened:
1. While using some apps the phone used to freeze, then shutdown. A restart would solve the problem for a while. But the lag used to remain.
2. The same problem repeated after a while but this time the phone went into bootloop.
3. I wiped cache, tried other solutions but nothing worked out so I reflashed the same ROM after a clean wipe. Phone worked fine for a week but then slowed down and finally crashed (This happened 2 times.)
4. After a week it was different, this time the boot animation would get stuck, then the phone would crash. So I reflashed again but when I booted up the phone there was no SIM service, no iMEi, No Wifi, No IP, Bluetooth.
5. I thought this AEX Pie ROM to be a problem so I flashed Arrow OS, Paranoid OS, AEX Oreo version, AEX 10 version but the problem remained: The phone would boot, boot animation stuck, and the phone would crash. This loop is where I am now.
I followed THIS GUIDE and tried reverting back to Official Stock ROM using QFIL. The flash was successful but the phone wouldn't bootup and went into a restart loop.
Here are some more important details:
1. The recovery mode is working fine. I can flash and wipe but I sometimes get the error of "Unable to mount" on Data, System and Cache partition which is solved with a format.
2. I can also get into Fastboot mode, EDL mode for QFIL flash.
3. I can also view all files and folders from TWRP Filemanager.
TLDR; Phone keeps crashing on boot, reverting to stock ROM also leads to restart loop, the phone shows no SIM, Wifi, iMEi, IP, etc. Tried wipe, clean flash, format which is successful but the problem remains. HELP!
"4. After a week it was different, this time the boot animation would get stuck, then the phone would crash. So I reflashed again but when I booted up the phone there was no SIM service, no iMEi, No Wifi, No IP, Bluetooth."
This is caused by bad ROM flashing ( when your flash wasn't entirely successful). You can fix this by reflashing. This could also happen if you downgraded, so go back to the version uou were on and see if this did it. You can fix IMEI with root if you want, I saw a thread for another phone: https://forum.xda-developers.com/g5-plus/how-to/fix-persist-resolve-imei0-explanation-t3825147 see if this could help.
"Animation Stuck"
This could be a problem with the ROM and data/cache, try factory resetting. Otherwise, it is also a problem with the ROM
In any case, I would redownload and reflash Stock ROM again and see if it still happens.

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