bootloop - Galaxy Tab S2 Q&A, Help & Troubleshooting

Hi all,
I tried to flash a custom Rom and gapps but it got in a bootloop (first i wiped data, system, cache and art/dalvik cache). It says kernel is not seandroid enforcing.
In think the problem was that the custom rom was android 6.0 but the tablet was on 5.0
What can I do now? How do I get into twrp? I tried all button combinations.
Thanks!
Edit: fixed it, finally managed to get into twrp and restore my backup. Now I still have to figure out how to install the custom rom

That's good uve got it working, if your device is compatible just use the relevant sections from the following guide:
http://forum.xda-developers.com/tab-s2/general/sm-t710-6-0-1-t710xxu2cpd9-marshmallow-t3371545

Related

BRICKED

I was trying to flash CM12 on my XT1068 indian version through TWRP, while installing CM 12 & GAPS GAPPS gave me some errors and it did't flash so i wiped system, data, dalvik cache, cache.
Again i tried to flash CM12 rom and gave me error "unable to mount system".
after that the phone kept restarting even TWPR won't work, so i tried to flashed CWM through fastboot still unavailable to start.
i can boot my phone in bootloader.
Please Help im a Newbe
Return to stock
Flash CM11 let it boot (make sure your using the latest TWRP) and then flash CM12
Hansil said:
I was trying to flash CM12 on my XT1068 indian version through TWRP, while installing CM 12 & GAPS GAPPS gave me some errors and it did't flash so i wiped system, data, dalvik cache, cache.
Again i tried to flash CM12 rom and gave me error "unable to mount system".
after that the phone kept restarting even TWPR won't work, so i tried to flashed CWM through fastboot still unavailable to start.
i can boot my phone in bootloader.
Please Help im a Newbe
Click to expand...
Click to collapse
Flash stock firmware, use this:
http://forum.xda-developers.com/moto-g-2014/general/official-stock-firmware-5-0-2-lxb22-46-t3019612

Lenovo K3 Note- No Os installed. Cant install custom Rom through TWRP or SP Flash.

So I recently tried to upgrade to S433 rom. I had taken a Nanadroid backup but my recovery was old cwm so I flashed TWRP 2.8 and now TWRP doesn't show my backup but even although old CWM was able to restore the backup it never booted it just went into boot loop.
So I tried flashing a new ROM through TWRP but it's always getting zip verification failed although I think that those are proper signed Roms. Ive tried two Roms and both are giving the same error.
Nothing happens when I use SP flash so I am assuming that there's some problem with drivers on Win 7.
So what should or could I do now?
I can boot into the TWRP recovery.
If I turn off zip verification, it just goes into TWRP instantly.
Flash SP is your best bet..Did SP tools see your phone? If not then try searching for drivers
Try Androium rom flashed with 3.0.2 twrp. Format data, cache, dalvik, system before flashing. Never gave me a problem.

Unable to install custom roms

Hi all,
I was on xiaomi.eu MIUI 11 ROM for some time, but wanted to switch to either Evolution or Syberia ROM.
I did a complete wipe and installed evolution os trough twrp... but i forgot to remove encryption so i bricked my device...
So then, I flashed the latest stock rom (11.05)with Xiaomi flash tool, but then i was stuck with the chinese ROM so...
1. I went back to bootloader and flashed mauronofrio's TWRP recovery .
2. completely wiped phone; Cache,System,Data,Internal storage
3. copied Evolution OS 4.1 to my phone
4. installed zip trough TWRP, all successfull
5. but then when rebooting, TWRP says:"No OS installed, do you wish to continue"
6. i tried other ROMs like xiaomi.eu and syberia, but these would either give me the same problem, or just bootloop until iam back in the fastboot screen...
Anyone any idea what iam doing wrong?
dev-DaT said:
Hi all,
I was on xiaomi.eu MIUI 11 ROM for some time, but wanted to switch to either Evolution or Syberia ROM.
I did a complete wipe and installed evolution os trough twrp... but i forgot to remove encryption so i bricked my device...
So then, I flashed the latest stock rom (11.05)with Xiaomi flash tool, but then i was stuck with the chinese ROM so...
1. I went back to bootloader and flashed mauronofrio's TWRP recovery .
2. completely wiped phone; Cache,System,Data,Internal storage
3. copied Evolution OS 4.1 to my phone
4. installed zip trough TWRP, all successfull
5. but then when rebooting, TWRP says:"No OS installed, do you wish to continue"
6. i tried other ROMs like xiaomi.eu and syberia, but these would either give me the same problem, or just bootloop until iam back in the fastboot screen...
Anyone any idea what iam doing wrong?
Click to expand...
Click to collapse
This works for me every time.
1 Flash the latest fastboot ROM.
2 Flash TWRP (same one you used)
3 Boot into TWRP (use the vol+ button when booting)
4 In format menu swipe to factory reset, then format data (VERY IMPORTANT this must be FORMAT not just wipe)
5 In reboot menu boot into recovery, this ensures TWRP correctly accesses the newly formatted data partition.
6 Copy over the ROM (and GApps, if needed and/or Magisk)
7 Flash the ROM, (then GApps if needed)
8 Boot into system and do the initial setup
9 If installing Magisk, boot back to TWRP and install Magisk.
There is no need to wipe anything else. There is no need to wipe anything again after installing. There is no need to disable encryption or dm-verity.
Robbo.5000 said:
This works for me every time.
1 Flash the latest fastboot ROM.
2 Flash TWRP (same one you used)
3 Boot into TWRP (use the vol+ button when booting)
4 In format menu swipe to factory reset, then format data (VERY IMPORTANT this must be FORMAT not just wipe)
5 In reboot menu boot into recovery, this ensures TWRP correctly accesses the newly formatted data partition.
6 Copy over the ROM (and GApps, if needed and/or Magisk)
7 Flash the ROM, (then GApps if needed)
8 Boot into system and do the initial setup
9 If installing Magisk, boot back to TWRP and install Magisk.
There is no need to wipe anything else. There is no need to wipe anything again after installing. There is no need to disable encryption or dm-verity.
Click to expand...
Click to collapse
thanks, i always thought that a wipe was sufficient, or at least equal to a format... anyways will report back later when i have time to try it. lets hope it works because i can't handle this chinese rom
dev-DaT said:
thanks, i always thought that a wipe was sufficient, or at least equal to a format... anyways will report back later when i have time to try it. lets hope it works because i can't handle this chinese rom
Click to expand...
Click to collapse
The format is needed to temporarily remove encryption
I've just remembered that I missed an important step. Call it step 1.5
If you going to flash immediately after flashing official MIUI you must boot into MIUI once before doing anything else. You don't need to go through the set-up, you can boot immediately into fastboot after you get to the initial set-up page. The first boot finalises the install and is needed before you flash over the top of it. That may be the cause of your issue if you had missed this before.
Robbo.5000 said:
The format is needed to temporarily remove encryption
I've just remembered that I missed an important step. Call it step 1.5
If you going to flash immediately after flashing official MIUI you must boot into MIUI once before doing anything else. You don't need to go through the set-up, you can boot immediately into fastboot after you get to the initial set-up page. The first boot finalises the install and is needed before you flash over the top of it. That may be the cause of your issue if you had missed this before.
Click to expand...
Click to collapse
Ok so i flashed TWRP again, rebooted to stock rom and then rebooted into recovery, but the stock recovery is still there.
When i flash TWRP and reboot into recovery immediately i can enter TWRP, but if i reboot the phone to MIUI and then reboot again, TWRP is gone again...
It seems like TWRP does not persist... now iam stuck again on fastboot screen because i wiped + formatted everything.
Edit:
When i want to flash recovery it says "OKAY" but it is unable to boot:
Sending 'recovery' (65536 KB) OKAY [ 1.562s]
Writing 'recovery' OKAY [ 0.333s]
Finished. Total time: 1.989s
Sending 'boot.img' (65536 KB) OKAY [ 1.547s]
Booting FAILED (remote: 'Failed to load/authenticate boot image: Load Error')
fastboot: error: Command failed
dev-DaT said:
Ok so i flashed TWRP again, rebooted to stock rom and then rebooted into recovery, but the stock recovery is still there.
When i flash TWRP and reboot into recovery immediately i can enter TWRP, but if i reboot the phone to MIUI and then reboot again, TWRP is gone again...
It seems like TWRP does not persist... If i wipe all data trough TWRP and then reboot, i don't have OS but i do reboot back into TWRP, because well, there is nothing else...
Click to expand...
Click to collapse
This is normal, MIUI will restore stock recovery of the recovery partition changes. In order to persist TWRP you need to either install Magisk, disable dm-verity or install a custom ROM.
If you are going to flash a custom ROM, then you should do so immediately after flashing TWRP.
After formatting data, TWRP has an issue seeing the data partition, so go to the reboot menu in TWRP and select to reboot to recovery.
Then you can immediately install the ROM of choice. You cannot boot back into system as you'll lose TWRP.
Robbo.5000 said:
This is normal, MIUI will restore stock recovery of the recovery partition changes. In order to persist TWRP you need to either install Magisk, disable dm-verity or install a custom ROM.
If you are going to flash a custom ROM, then you should do so immediately after flashing TWRP.
After formatting data, TWRP has an issue seeing the data partition, so go to the reboot menu in TWRP and select to reboot to recovery.
Then you can immediately install the ROM of choice. You cannot boot back into system as you'll lose TWRP.
Click to expand...
Click to collapse
Ok, it appears that everytime i wipe system, i am not able to boot anymore into TWRP... Am i supposed to wipe System? or only wipe data & format data
dev-DaT said:
Ok, it appears that everytime i wipe system, i am not able to boot anymore into TWRP... Am i supposed to wipe System? or only wipe data & format data
Click to expand...
Click to collapse
There is no need to wipe system. You only need to wipe cache and dalvik and format data. (I choose to factory reset because it's easier in TWRP, but you could do advanced wipe and select cache and dalvik, then format data. Follow the steps exactly, but include my later step 1.5
I've just followed this myself today, as I've moved from LOS to the latest unofficial Havoc build.
In theory you could start by booting to fastboot and flashing TWRP again, then follow the steps from that point. You probably don't need to install MIUI.
Robbo.5000 said:
There is no need to wipe system. You only need to wipe cache and dalvik and format data. (I choose to factory reset because it's easier in TWRP, but you could do advanced wipe and select cache and dalvik, then format data. Follow the steps exactly, but include my later step 1.5
I've just followed this myself today, as I've moved from LOS to the latest unofficial Havoc build.
In theory you could start by booting to fastboot and flashing TWRP again, then follow the steps from that point. You probably don't need to install MIUI.
Click to expand...
Click to collapse
Ok thanks a lot! So no need to wipe system partition after stock rom install. just wipe cache/dalvik/data, got it.
Most ROM install guides tell you to wipe /system when coming from stock rom. I guess this requirement has changed? or depends on what ROM you're coming from?
Use can use my guide
https://forum.xda-developers.com/k20-pro/how-to/simple-beginners-guide-to-raphaelin-t4020543
it has how to flash roms, and fastboot fix. (which tells why the Recovery isn't staying)
Robbo.5000 said:
This works for me every time.
1 Flash the latest fastboot ROM.
2 Flash TWRP (same one you used)
3 Boot into TWRP (use the vol+ button when booting)
4 In format menu swipe to factory reset, then format data (VERY IMPORTANT this must be FORMAT not just wipe)
5 In reboot menu boot into recovery, this ensures TWRP correctly accesses the newly formatted data partition.
6 Copy over the ROM (and GApps, if needed and/or Magisk)
7 Flash the ROM, (then GApps if needed)
8 Boot into system and do the initial setup
9 If installing Magisk, boot back to TWRP and install Magisk.
There is no need to wipe anything else. There is no need to wipe anything again after installing. There is no need to disable encryption or dm-verity.
Click to expand...
Click to collapse
I need help... The reason why I'm flashing custom rom is, when the latest update came MIUI 12.5 android 11, all sensors of my phone stopped working like (Gyroscope, accelerometer, proximity sensor) I tied to flash the rom by fastboot method but still the problem persists. because of that I unlocked bootloader and flashed twrp. After flashing custom rom when I tried to boot it, it stuck on booting screen and when I tried to reboot into recovey it is showing fastboot mode. I'm unable to boot into custom rom.
dev-DaT said:
Hi all,
I was on xiaomi.eu MIUI 11 ROM for some time, but wanted to switch to either Evolution or Syberia ROM.
I did a complete wipe and installed evolution os trough twrp... but i forgot to remove encryption so i bricked my device...
So then, I flashed the latest stock rom (11.05)with Xiaomi flash tool, but then i was stuck with the chinese ROM so...
1. I went back to bootloader and flashed mauronofrio's TWRP recovery .
2. completely wiped phone; Cache,System,Data,Internal storage
3. copied Evolution OS 4.1 to my phone
4. installed zip trough TWRP, all successfull
5. but then when rebooting, TWRP says:"No OS installed, do you wish to continue"
6. i tried other ROMs like xiaomi.eu and syberia, but these would either give me the same problem, or just bootloop until iam back in the fastboot screen...
Anyone any idea what iam doing wrong?
Click to expand...
Click to collapse
Bro I have one doubt, I installed pixel os successfully then I roll back into stock os(miui) with locking bootloader, the. Again I unlock bootloader successfully, but the problem is I am unable to install os, i tried wipe data, catch. But the stock rom was not removed. What can I do?
Using orange fox in resmi note 10 pro

Stuck at MI Logo...

Hello all,
so i have an strange issue here. after installing magisk canary yesterday evening, i ended up in a bootloop.
so i stayed pretty cool and went to twrp, used magisk uninstaller and thought hmm okay ****, still not booting, not even shows the boot animation now.
stuck at the MI logo, flicks one time, and then stuck again.
so trying to reflash magisk then with 20.4, but nothing changed.
i ended up doing a full wipe, downloading the latest v12 vendor global and reflashed the rom.
booted up all fine. set it all up again, did a random restart, without doing stuff.
boot animation....10 minutes..
restarted stuck at mi logo again.
not even the system is trying to get up.
now i can wipe verything, vendor, data, system, dalvik, whatsoever, i wiped everything, flashed vendor again, installed rom.
nothing... stuck at the MI logo.
any ideas?
many thanks
If you're flashing recovery ROM i suggest you use fastboot ROM
Sent from my Redmi K20 Pro using Tapatalk
i reflashed now via xiami flash tool and stock rom and it boots up.
but as soon as i flash twrp and a custom rom, with wipe before, everything is stuck again on the mi logo.
what the...?
supelele said:
now i can wipe verything, vendor, data, system, dalvik, whatsoever, i wiped everything, flashed vendor again, installed rom, FORMAT DATA, reboot to system.
Click to expand...
Click to collapse
try format data after flashing the rom.
jcdr12 said:
try format data after flashing the rom.
Click to expand...
Click to collapse
does not change anything , still the same issue.
seems that i cannot use any custom rom anymore. always stuck at the Mi logo.
i need to reset the whole phone via MiFlashTool once i installed a custom rom which ends up not booting.
rip custom rom...
supelele said:
does not change anything , still the same issue.
seems that i cannot use any custom rom anymore. always stuck at the Mi logo.
i need to reset the whole phone via MiFlashTool once i installed a custom rom which ends up not booting.
rip custom rom...
Click to expand...
Click to collapse
From stock MIUI.
Install TWRP
Boot into TWRP
Do a factory reset
Format data - Format not wipe, need to type yes to confirm
Reboot to recovery (TWRP)
Flash custom ROM
Flash GApps if needed/wanted
Boot into the ROM
Everything should be good
Flash Magisk if required
Do not wipe any other partitions in TWRP, the factory reset is enough.
Make sure you format data in TWRP - don't miss this step out.
If you're doing this immediately after flashing MIUI, you must boot into MIUI once to finalise the installation.
Yes format data not wipe.
when i flash custom rom, even i am not on miui i first format data with yes in twrp then reboot to twrp. I put rom and gapps to internal memory, and install rom and gapps. and when finish reboot to system, when phone restart it stack at mi logo, so i have to go back to twrp and do again format data with typing yes, and then reboot to system and it works. so no wipe data, format data with typing yes.
oh and i thought, wipe is the same as format.... :/
works like charm. booted up successfully evo x with vendor 12 global.
Install TWRP
Boot into TWRP
Do a factory reset
Format data - Format not wipe, need to type yes to confirm
Reboot to recovery (TWRP)
Flash Vendor
Flash custom ROM
Boot into the ROM
Everything should be good
Flash Magisk if required
thanks all !
supelele said:
oh and i thought, wipe is the same as format.... :/
works like charm. booted up successfully evo x with vendor 12 global.
Install TWRP
Boot into TWRP
Do a factory reset
Format data - Format not wipe, need to type yes to confirm
Reboot to recovery (TWRP)
Flash Vendor
Flash custom ROM
Boot into the ROM
Everything should be good
Flash Magisk if required
thanks all !
Click to expand...
Click to collapse
If you want to change to a different ROM, or if you want to update Evo x, then the safest way is to remove lockscreen security before flashing. This will remove encryption, which will allow you to clean flash a new ROM, or dirty flash an update, without any issues caused by encryption.
Once your done, add the lockscreen security back.
supelele said:
i reflashed now via xiami flash tool and stock rom and it boots up.
but as soon as i flash twrp and a custom rom, with wipe before, everything is stuck again on the mi logo.
what the...?
Click to expand...
Click to collapse
whats your version of mi flash tool
supelele said:
i reflashed now via xiami flash tool and stock rom and it boots up.
but as soon as i flash twrp and a custom rom, with wipe before, everything is stuck again on the mi logo.
what the...?
Click to expand...
Click to collapse
I'm getting the same problem, is there any fix?

problems with roms

(Im spanish, sorry if my english has errors or is really bad )
Hi, i've got a problem, I spent all day trying to fix a wrong rom installation but nothing works.
I was using Revolution Remix 8.6.2 and I wanted to try the new official hentaiOS, so I made a complete twrp backup of everything and I copied it to my computer, I wiped system, data, dalvick, and cache, and I flash hentaiOS rom zip. It was a normal bootloop so I just wiped all and restored the backup, but it didnt work (System had magisk with some modules but nothing happend in the previous reboots), so I rebooted into recovery to flash the clean RROS zip and try restoring only some parts of the backup to see which partition was causing the bootloop, but I was unable to boot into recovery, I used mi flash with miui 12 fastboot rom, it worked so I flashed TWRP again and tried to install RROS but nothing works.
I already tried with RROS 8.6.2, 8.6.1 and 8.6.0 but no one works, now Im gonna try with ArrowOS (It didn't work) but I want to use RROS, what can I do?
Xsoft32 said:
(Im spanish, sorry if my english has errors or is really bad )
Hi, i've got a problem, I spent all day trying to fix a wrong rom installation but nothing works.
I was using Revolution Remix 8.6.2 and I wanted to try the new official hentaiOS, so I made a complete twrp backup of everything and I copied it to my computer, I wiped system, data, dalvick, and cache, and I flash hentaiOS rom zip. It was a normal bootloop so I just wiped all and restored the backup, but it didnt work (System had magisk with some modules but nothing happend in the previous reboots), so I rebooted into recovery to flash the clean RROS zip and try restoring only some parts of the backup to see which partition was causing the bootloop, but I was unable to boot into recovery, I used mi flash with miui 12 fastboot rom, it worked so I flashed TWRP again and tried to install RROS but nothing works.
I already tried with RROS 8.6.2, 8.6.1 and 8.6.0 but no one works, now Im gonna try with ArrowOS (It didn't work) but I want to use RROS, what can I do?
Click to expand...
Click to collapse
I found the way to boot RROS, I flashed the vendor of the lineageOS post
(Link: https://forum.xda-developers.com/k20-pro/development/rom-lineageos-17-0-t3976469 )
and after that I flash RROS 8.6.0, once it boot I reboot to recovery and started updating it.
Hope this info is useful for someone

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