Hey folks. I'm hitting a brick wall trying to figure out this issue and I'm hoping someone will know how to fix this.
I have a Galaxy Tab A 8 (SM-T350) that I rooted and successfully flashed with first crDroid, then Lineage (both Android 9.0) using TWRP. I had made a backup before attempting this just in case I wanted to revert to stock.
Well, that didn't go as smoothly as I was hoping. Ever since trying to restore my backup, I've been stuck on a continuous boot loop that I can't seem to fix.
I keep getting "E:failed to mount /efs (Invalid argument)" and "dm-verity verification failed. . ." no matter what I try. I've googled the error and tried every solution suggested but I still can't get it to boot.
Any help at all would be greatly appreciated. Thanks.
skorpien said:
Hey folks. I'm hitting a brick wall trying to figure out this issue and I'm hoping someone will know how to fix this.
I have a Galaxy Tab A 8 (SM-T350) that I rooted and successfully flashed with first crDroid, then Lineage (both Android 9.0) using TWRP. I had made a backup before attempting this just in case I wanted to revert to stock.
Well, that didn't go as smoothly as I was hoping. Ever since trying to restore my backup, I've been stuck on a continuous boot loop that I can't seem to fix.
I keep getting "E:failed to mount /efs (Invalid argument)" and "dm-verity verification failed. . ." no matter what I try. I've googled the error and tried every solution suggested but I still can't get it to boot.
Any help at all would be greatly appreciated. Thanks.
Click to expand...
Click to collapse
Ignore the EFS error its probably a red herring. Your issue is dm-verity.
3 ways around it. Return to complete stock, including wiping the data partition or flash root (magisk suggested) or disable dmverity using one of the zips out there.
ashyx said:
Ignore the EFS error its probably a red herring. Your issue is dm-verity.
3 ways around it. Return to complete stock, including wiping the data partition or flash root (magisk suggested) or disable dmverity using one of the zips out there.
Click to expand...
Click to collapse
Thanks for the reply ashyx.
I've done two of the three things you suggested. I've tried returning it to stock using an image matching my exact model, and I've tried disabling dmverity. I've also tried rooting it but using a method other than magisk.
The flash seems to go well enough, but then I get stuck at the Samsung logo whenever I try rebooting into the system.
I've tried waiting, thinking I'm just being impatient, but it doesn't ever seem to get past the logo. I've tried googling ways to fix it being stuck on the logo but nothing I do seems to work. Is there any other way around it?
Side note: I've been able to flash Lineage OS again and might just have to stick with that if I can't flash it back to stock. Do you know any resources for replacing the default apps? I've tried GApps but I was wondering if there's a similar Samsung installer?
skorpien said:
Thanks for the reply ashyx.
I've done two of the three things you suggested. I've tried returning it to stock using an image matching my exact model, and I've tried disabling dmverity. I've also tried rooting it but using a method other than magisk.
The flash seems to go well enough, but then I get stuck at the Samsung logo whenever I try rebooting into the system.
I've tried waiting, thinking I'm just being impatient, but it doesn't ever seem to get past the logo. I've tried googling ways to fix it being stuck on the logo but nothing I do seems to work. Is there any other way around it?
Side note: I've been able to flash Lineage OS again and might just have to stick with that if I can't flash it back to stock. Do you know any resources for replacing the default apps? I've tried GApps but I was wondering if there's a similar Samsung installer?
Click to expand...
Click to collapse
You need to wipe the data partition, aka factory reset before or after installing the stock firmware then it will take anything up to 15 mins to boot.
ashyx said:
You need to wipe the data partition, aka factory reset before or after installing the stock firmware then it will take anything up to 15 mins to boot.
Click to expand...
Click to collapse
I've tried leaving it for a few hours in hopes that it would boot, but unfortunately it stays stuck on the logo.
Is there a way to check where or why it's getting hung up?
skorpien said:
I've tried leaving it for a few hours in hopes that it would boot, but unfortunately it stays stuck on the logo.
Is there a way to check where or why it's getting hung up?
Click to expand...
Click to collapse
Did you back up the efs partition with twrp?
If so try restoring it.
ashyx said:
Did you back up the efs partition with twrp?
If so try restoring it.
Click to expand...
Click to collapse
I did and I have been restoring it.
So far, this is what I've attempted:
Flash TWRP (twrp_3.1.0-1_sm-t350_18317.tar using Odin3 v3.10)
Reboot into recovery
Wipe everything from tablet
Format tablet
Reboot into download mode
Flash stock image with Odin
Reboot into recovery
Wipe dalvik cache
Restore backup (including efs partition)
Wipe dalvik cache (again)
Reboot
Get stuck on Samsung logo (left it for hours with no change)
skorpien said:
I did and I have been restoring it.
So far, this is what I've attempted:
Flash TWRP (twrp_3.1.0-1_sm-t350_18317.tar using Odin3 v3.10)
Reboot into recovery
Wipe everything from tablet
Format tablet
Reboot into download mode
Flash stock image with Odin
Reboot into recovery
Wipe dalvik cache
Restore backup (including efs partition)
Wipe dalvik cache (again)
Reboot
Get stuck on Samsung logo (left it for hours with no change)
Click to expand...
Click to collapse
Don't restore everything just EFS No need to keep wiping dalvik it serves no purpose when formatting or wiping the data partition.
Also FORMAT not wipe the data partition (note this wipes internal storage)
If it still doesn't boot install the combo firmware. Let it boot, factory reset from settings then reboot to download mode and install the stock firmware again.
Related
Hello. I tried doing the 5.0 update to my tablet using the factory images. It failed on sending /system and now the whole tablet isn't working. I loaded Philz, to wipe the whole tablet, and it errors mounting /data and /system when attempting to wipe. I have tried wiping everything in every way, and nothing. I cannot get anything to flash on the tablet. Any help?
Yoyodude1124 said:
Hello. I tried doing the 5.0 update to my tablet using the factory images. It failed on sending /system and now the whole tablet isn't working. I loaded Philz, to wipe the whole tablet, and it errors mounting /data and /system when attempting to wipe. I have tried wiping everything in every way, and nothing. I cannot get anything to flash on the tablet. Any help?
Click to expand...
Click to collapse
Ya man, its the same with me . Hope someone, reply's with a solution for it.
Maybe try with latrst version of twrp instead of Philz.
Flash TWRP
Wipe
Advanced wipe
Select system
Repair or change file system
Repair
Let it do its thing, then flash your ROM.
Send your thanks to @Paramesh96. He gave me this advice on my thread. Still haven't been able to flash factory images. But I can get my tablet up & running again with this guide
I could do this, but I have no way of moving a zip file to the tablet.
Yoyodude1124 said:
I could do this, but I have no way of moving a zip file to the tablet.
Click to expand...
Click to collapse
I flashed TWRP, went through the process, rebooted to bootloader, reflashed TWRP, reboot to recovery & mtp was enabled to access the sdcard
Hi,
I have G935F, installed TWRP 3.0.0.0 and rooted, WITHOUT wiping. System boots correctly, but I cannot do factory reset or wipe with TWRP, because I got some messages like "Cannot mount Data" and "Failed crypto loader". I understand that it has to do with encryption. Can someone please enlight me, and give me tips about the issue?
Thank you
Polemos82 said:
Hi,
I have G935F, installed TWRP 3.0.0.0 and rooted, WITHOUT wiping. System boots correctly, but I cannot do factory reset or wipe with TWRP, because I got some messages like "Cannot mount Data" and "Failed crypto loader". I understand that it has to do with encryption. Can someone please enlight me, and give me tips about the issue?
Thank you
Click to expand...
Click to collapse
You have to download dm-verity and force encryption disabler from here , put it to SD card, reboot into TWRP, FORMAT DATA (not wipe) and flash that file (dm-verity and force encryption disabler). All your data will be erased.
No way to unencrypt without loosing you data for the moment(
"All your data will be erased" means that after boot I'll find a clean system installation (as factory reset)?
I hope not to be posing stupid questions, I'm completely new to this world
Thank you very much
Yes just as a factory reset
Sent from my SM-G935W8 using Tapatalk
Ok, thank you all!!! ???
s it very important to wipe data?
Can I first flash the twrp ,second back up the rom by TWRP recovery
and then after factory reset ,I restore thw rom by twrp??
IS IT possible?
AGU PENG said:
Can I first flash the twrp ,second back up the rom by TWRP recovery
and then after factory reset ,I restore thw rom by twrp??
IS IT possible?
Click to expand...
Click to collapse
No, you cannot perform a backup, because your data is encrypted by default and the only way to disable it is to format your data.
I have a unique problem. I have a HTC Desire 612 from Verizon and I decided to revive it to playe PoGo. But it was stuck in a boot loop and I couldn't get any custom ROM.
Finally a gentle soul here gave me the stock rom and I flashed it vide TWRP and played PoGo for weeks. Then yesterday the phone bro led and when it came up it was stuck in a boot loop.
So I decided to flash the stock ROM again. But before that I tried to factory reset. I could go to TWRP, select wipe data, enter yes and the wiping was successful, then clear dalvic and cache and system beforehand finally I flashed the stock ROM.
Surprise surprise is NOTHING happens. The phone boots without the apps telling me they are installing. Then I get back the exact same data in my phone including my selected wallpaper and apps. Before I can do anything the phone restarts.
Point is wiping and restoring the stock ROM does NOTHING to the phone yet the processes are successful. Can somebody help?
vooks said:
I have a unique problem. I have a HTC Desire 612 from Verizon and I decided to revive it to playe PoGo. But it was stuck in a boot loop and I couldn't get any custom ROM.
Finally a gentle soul here gave me the stock rom and I flashed it vide TWRP and played PoGo for weeks. Then yesterday the phone bro led and when it came up it was stuck in a boot loop.
So I decided to flash the stock ROM again. But before that I tried to factory reset. I could go to TWRP, select wipe data, enter yes and the wiping was successful, then clear dalvic and cache and system beforehand finally I flashed the stock ROM.
Surprise surprise is NOTHING happens. The phone boots without the apps telling me they are installing. Then I get back the exact same data in my phone including my selected wallpaper and apps. Before I can do anything the phone restarts.
Point is wiping and restoring the stock ROM does NOTHING to the phone yet the processes are successful. Can somebody help?
Click to expand...
Click to collapse
HTC?? Wrong thread.
B3311 said:
HTC?? Wrong thread.
Click to expand...
Click to collapse
It really is about TWRP failing to wipe
first of all I'm sorry to create a new thread and it is different from other's problem.
first I'll tell what I have done.
flashed f2fs recovery by bugerXXX
formatted data, cache partitions to f2fs
flashed lineage os by harsh
rebooted to system & it was booted.
(no problem till here)
then I again rebooted to recovery
backup system& it just rebooted in the middle of the process
and that's it it never rebooting to system.
it always rebooting to splash screen infinite times when I try to power it on.
recovery works
fastboot works
download mode works
tried flashing different ROMs
reformatted data cache partitions to ext4
it always rebooting to splash screen infinite times.
even I flashed ROM (kk&lp) with QFIL and results are same.
but after flashed kk it completed boot animation and entered setup wizard, then again it started to rebooting
I think it has some problem with partitions or emmc
is there any thing that I can do to revive my phone?
senthamizhan said:
first of all I'm sorry to create a new thread and it is different from other's problem.
first I'll tell what I have done.
flashed f2fs recovery by bugerXXX
formatted data, cache partitions to f2fs
flashed lineage os by harsh
rebooted to system & it was booted.
(no problem till here)
then I again rebooted to recovery
backup system& it just rebooted in the middle of the process
and that's it it never rebooting to system.
it always rebooting to splash screen infinite times when I try to power it on.
recovery works
fastboot works
download mode works
tried flashing different ROMs
reformatted data cache partitions to ext4
it always rebooting to splash screen infinite times.
even I flashed ROM (kk&lp) with QFIL and results are same.
but after flashed kk it completed boot animation and entered setup wizard, then again it started to rebooting
I think it has some problem with partitions or emmc
is there any thing that I can do to revive my phone?
Click to expand...
Click to collapse
Revert back your partitions to ext4
Wipe them
Fix them using fix option
Flash lollipop stock ROM
And see if it boots up
And next time be sure to ask for help before doing anything so that you don't end up like this
And contact me if it does not help
Don't forget to fix partitions
still same problem
The Hard Gamer said:
Revert back your partitions to ext4
Wipe them
Fix them using fix option
Flash lollipop stock ROM
And see if it boots up
And next time be sure to ask for help before doing anything so that you don't end up like this
And contact me if it does not help
Don't forget to fix partitions
Click to expand...
Click to collapse
you mean " repair file system " in twrp??
I have formatted system, data, cache to ext4
and repaired them using "repair file system" in twrp
flashed s061 stock ROM
but the problem still present.
and I wanna know what is " validated_emmc_firehouse_8916.mbn". can I use it instead of "prog_emmc_firehouse_8916.mbn" in QFIL ??
senthamizhan said:
you mean " repair file system " in twrp??
I have formatted system, data, cache to ext4
and repaired them using "repair file system" in twrp
flashed s061 stock ROM
but the problem still present.
and I wanna know what is " validated_emmc_firehouse_8916.mbn". can I use it instead of "prog_emmc_firehouse_8916.mbn" in QFIL ??
Click to expand...
Click to collapse
The sequence of flashing files is written in scatter file so even of you change the file and it is not meant to be flashed it won't flash
I don't think there might be a hardware fault
i am also suffering from this same problem
I'm not sure what happened, I was flashing a kernel, and suddenly my device stopped booting, getting stuck at the OnePlus logo, with 'Powered by android". TWRP was installed, so I tried restoring a backup, but that didn't help. I tried flashing the stock 4.5.5 full zip, it would still stay at the OP logo screen. I tried wiping the phone, flashing the stock full zip, still stuck at boot. I tried going back to the stock recovery (I know, risky), and it succeeded in flashing, but when I boot to recovery, the screen just goes black, and I have to hard-reboot. I can however flash TWRP back, and it seems to work fine. When I look in the file manager on TWRP, I can see things in the system partition, but I still can't boot to it.
I'm starting to panic now, so any help would be appreciated.
To clarify, even doing fastboot boot OP5_recovery.img brings be to the black screen
It may be that you have an issue with encrypted data partition which you cannot recover otherwise
Try flashing TWRP, then in TWRP select "Wipe", "Format data" and answer with "yes" when asked for confirmation.
NOTE: when doing the steps above the whole data partition will be erased, including internal storage - so when in doubt back up your data before proceeding
s3axel said:
It may be that you have an issue with encrypted data partition which you cannot recover otherwise
Try flashing TWRP, then in TWRP select "Wipe", "Format data" and answer with "yes" when asked for confirmation.
NOTE: when doing the steps above the whole data partition will be erased, including internal storage - so when in doubt back up your data before proceeding
Click to expand...
Click to collapse
I had already done that a few times.
However, wiping fixed it, but not in TWRP. doing fastboot -w fixed it, and the phone was able to boot to stock recovery. After that I flashed system zip, and TWRP again, and I'm back up (just got it working 15 mins ago)
Thanks for the answer, though!
0xTJ said:
I had already done that a few times.
However, wiping fixed it, but not in TWRP. doing fastboot -w fixed it, and the phone was able to boot to stock recovery. After that I flashed system zip, and TWRP again, and I'm back up (just got it working 15 mins ago)
Thanks for the answer, though!
Click to expand...
Click to collapse
Please change the title of this thread to: "[SOLVED] Soft-Bricked OnePlus 5, TWRP works, but nothing else". That will help others who may get into a similar plight.
Attempt 1 to install Lineage
Tried installing the Lineage 14.1, it kept doing a blank-but-illuminated screen, then turned off and back on, resulting in a boot loop.
We tried a couple of things - first the more conservative wiping of just data, dalvik and cache.
This did the boot loop described above. I then restored the stock backup and all was well.
Attempt 2 to install Lineage
The second time we wiped the system partition in addition to the above. Same bootloop.
Went to restore the backup of stock again, but now it's getting stuck at "I'm not a phone I'm a comprehensive yada yada" screen. It never progresses past this.
Attempts to get Stock Restore working
We've tried restoring just the system, data and dalvik
We've also tried System Image in addition to these.
No joy.
We don't have a laptop or other device to hand for a few days so we have just what's on the phone - the Lineage 14.1 zip, the stock backup and TWRP.
Any ideas how we can get back to a working phone with either OS?
What type of LePro3 do you have?
X720,X722,X727?
It's the X722
kenbw2 said:
It's the X722
Click to expand...
Click to collapse
The X722 model is not supported by Lineage.
I think that you have a problem. Hope anyone can help you to go back to stock successfully.
When doing the stock restore, we didn't restore the boot image.
Is that something worth trying?
kenbw2 said:
When doing the stock restore, we didn't restore the boot image.
Is that something worth trying?
Click to expand...
Click to collapse
Yes, you could try it. Please, write, was it useful or not)
Success!
Restored System,. System Image, Cache, Data and Boot partitions and all is now back to normal.
Phew!
kenbw2 said:
Success!
Restored System,. System Image, Cache, Data and Boot partitions and all is now back to normal.
Phew!
Click to expand...
Click to collapse
That is great. So, is bluetooth works fine after that?