Stuck at LG logo after flashing any Kernel - LG V20 Questions & Answers

So I'm having a weird issue. Whenever I flash any kernel other then stock it stays stuck at the LG logo. I have to pull battery and then restore the stock kernel backup. I have no idea why I'm having this issue. I've also noticed that TWRP sometimes says cannot mount system (probably not the culprit but just adding more info).
Model: T-Mobile (h918)

When I had the "cannot mount" issue, a system partition format was needed from within TWRP. I took a backup of system (not a system.img backup), then formatted system only, then restored the system. It's been fine ever since.
I'm not sure if any special pocedure is needed for the h918 in order not to brick anything. I'm on US996.
I hope that made sense. Please wait for a second opinion before trying anything.

pistacios said:
When I had the "cannot mount" issue, a system partition format was needed from within TWRP. I took a backup of system (not a system.img backup), then formatted system only, then restored the system. It's been fine ever since.
I'm not sure if any special pocedure is needed for the h918 in order not to brick anything. I'm on US996.
I hope that made sense. Please wait for a second opinion before trying anything.
Click to expand...
Click to collapse
Yea. Seems like I have to format system all the time. Also have to format my internal storage all the time. My backups never seem to restore correctly. I can't flash a new ROM because it wont boot with a different kernel. I might just flash KDZ and root all over again.

Related

Partition damage? Not sure whats wrong...

Hey all,
I have an S4 i337m model. I've installed a custom ROM that is essentially a rooted stock ROM (I do not remember the exact build/version of the ROM). I realize having this info would be useful, but at the moment, I cannot access this info.
While running this ROM, everything was fine. Last week Friday, I attempted to install FoxHound 1.6. Had to play around with the installation options, but I got FoxHound to work. However, I need to get back on my old ROM as I needed some files that were deleted during the FoxHound install. So I wiped my phone, and restored my nandroid backup of my rooted stock ROM. again, everything was fine. No issues.
Here is where the problem is; after restoring my rooted stock ROM, I could boot into the phone and access the files needed. However, when I reboot/shut down phone, upon restarting/powering up, my phone is stuck at the 'Samsung Galaxy S4' logo right after power on. So, I boot into recovery (the latest version of TWRP) and I navigate to 'file manager' to take a look at my storage/files. And this is where I believe the issue to be; I see virtually no files at all. I can see many folders/partitions, but there are virtually no files anywhere (i.e. the system and data partitions are empty). I am assuming this is the reason why my phone doesn't boot past the Samsung Galaxy S4 logo. Now, when this happens, I wipe my phone again and restore my working nandroid backup. Everything works fine. I can get back into Android without issues. Until I reboot/power off my phone. Then this happens all over again.
I believe I may have damaged(?) the partition(s). When I installed FoxHound, I also installed an option during installation titled 'EXT4'. I know linux uses ext2/3/4 partition tables. Did I damage my storage/partition by installing EXT4 from FoxHound? Do I need to repartition my phone via Odin PIT file or something similar? Am I totally wrong with my analysis? Any help/advise/insight would be very welcomed.
Thanks
Additional info
Baseband: I337MVLUAMG1
Build number: JDQ39.I337MVLUAMG1
ROM: Rooted stock ROM 4.2.2 (with some bloatware removed)
While my phone was in the it's 'logo stuck' state, I entered into TWRP and selected the Wipe option, then Format Data. I must select 'Format Data' in order for my phone to work on it's next boot. Manually formatting System, Data, etc... will not allow my phone to boot up at next boot. And, my phone will only work on the next boot. If I power off/restart phone, it will get stuck at the logo again. So my phone is only good for 1 boot up after a wipe.
And, after I restore a working backup and boot into the phone, everything works until next power down/reboot. Once I power down/reboot phone, I must go into recovery since it will not boot into Android. When I get into TWRP, I see that my Internal Storage has 0MB free and I am unable to see any files. I can see folders/partitions, but there is nothing in any folder/partition. My external SD card shows nothing as well. My external SD card however is unaffected as all the data is still there once I get into Android and look around.
Also, I just restored a backup I had before I was having this issue. After restoring and rebooting, the same thing happens. I get stuck at the 'Samsung Galaxy S4' logo.
So I'm guessing there is some partition troubles here. Maybe I'm wrong, but I'm scratching my head as to the cause of this problem.
It could be some hardware issues too. I'd Odin back to stock and see if the problem persists. If it does its hardware.
jd1639 said:
It could be some hardware issues too. I'd Odin back to stock and see if the problem persists. If it does its hardware.
Click to expand...
Click to collapse
I thought the same thing. I'm downloading the stock ROM now and will give it a try.
One other thing I noticed during my last restore/fix attempt... After I perform a wipe -> Format Data (from TWRP), I notice that it reverts to my rooted stock ROM without me restoring anything. So, after I do a full wipe/format, and reboot my phone immediately after the full wipe/format, my phone will boot into the rooted stock ROM. I thought that wiping/formatting via TWRP totally cleans the internal storage of all data. So how can I be booting into any ROM after a wipe?
Unless I'm mistaken in my thinking and the full wipe/format option in TWRP just reverts back to the stock ROM I had installed prior to installing further custom ROMs?
If you wipe system and data there shouldn't be any rom it would boot. Don't try that though unless you have a nandroid because it shouldn't boot
What version of twrp ate you using?
Do not format data in twrp.
jd1639 said:
If you wipe system and data there shouldn't be any rom it would boot. Don't try that though unless you have a nandroid because it shouldn't boot
What version of twrp ate you using?
Click to expand...
Click to collapse
I hear ya... I have several nandroid backups. All work (minus this 'stuck at logo' issue I am having). I am using the newest TWRP version 2.6. It's very strange... after I perform a full wipe, I am able to boot into my rooted stock ROM that I flashed shortly after acquiring the phone. This was a bit over a month ago now. I do not know how this is possible.
xBeerdroiDx said:
Do not format data in twrp.
Click to expand...
Click to collapse
Why not?
_____________________________________________________________________
**Should I try using CWM instead?
Talabis said:
I hear ya... I have several nandroid backups. All work (minus this 'stuck at logo' issue I am having). I am using the newest TWRP version 2.6. It's very strange... after I perform a full wipe, I am able to boot into my rooted stock ROM that I flashed shortly after acquiring the phone. This was a bit over a month ago now. I do not know how this is possible.
Why not?
_____________________________________________________________________
**Should I try using CWM instead?
Click to expand...
Click to collapse
Use twrp 2.5.0.2 or cwm. The newer twrp has issues.
jd1639 said:
Use twrp 2.5.0.2 or cwm. The newer twrp has issues.
Click to expand...
Click to collapse
Is TWRP 2.5.0.0 ok to use?
Ok... It's really starting to look like my partition table has been damaged. Every time I flash a new ROM or restore a nandroid backup successfully, and then restart my phone, I get stuck at the S4 logo. Upon starting recovery, my internal storage reads 0MB free. It seems like my partition table is becoming corrupt after a reboot, or it has already been corrupted.
I tried flashing the stock ROM for my phone (I337MVLUAMDJ_I337MOYAAMDJ_I337MVLUAMDJ_HOME.tar is the one I used), but that didn't help at all. After installing this stock ROM, and I go into stock recovery, I get an error: E:failed to mount /data (invalid argument).
This really is looking like a partition problem. Is there some way to re-partition my phone? I remember a PIT file was used to partition my old Galaxy S i9000. Is there a PIT file for the S4 i337m?
I would also like to try CWM but I am having a hard time finding a ODIN flashable version.
I wouldn't mess with a pit file and I haven't seen one anyway. It's sounding more and more like your memory is bad. I'd keep it stock and see if you can get an exchange on the phone under warranty.
Further investigation has lead me to the culprit... sorta. It's my /data partition that is screwing everything up. If I format /data and then reboot, I can get into my phone. But if I reboot again, then my /data partition becomes corrupt and my phone hangs at the S4 logo. And then if I go into recovery, I can see that my internal storage is at 0MB free.
However, after formatting/restoring /data partition and rebooting into android successfully, everything works fine. If I reboot from this point and enter recovery, I am still able to see my /data partition and files. At this point, everything seems to be fine. Once I reboot out of recovery and let the phone boot into Android, I get stuck at the S4 logo and my /data partition screws up/becomes corrupt. It looks like my /data partition is only becoming corrupt after the 1st successful boot into Android. If I enter recovery after the 1st successful android load, I am still able to see all files and partitions. It is only trying to load android after the 1st boot that my /data partition becomes corrupt. Very strange...
So, I can always boot into my phone as long as I format my /data partition prior to loading Android. Anyone experience this before? Any ideas? I realize my memory may be damaged, but I'm leaving that as a last resort possibility since my phone was working fine up until I started installing FoxHound with the EXT4 option as well as installing 1 or 2 of the kernel's FoxHound provides. Namely Adam kernel is the one I tried.
All good... I think/hope
Well, I think I got the problem solved. After toying with this thing all day. It seems like TWRP 2.6 was the problem in some sense. Looks like TWRP 2.6 does not format the /data partition correctly. I had to get restore/install a working ROM, boot into my phone and install ClockworkMod Recovery via ROM Manager. I then used CWM to format /data. Once I did this, and loaded back into my phone, and went through the setup process since /data was formatted, everything was working fine. I just rebooted 5 times and shut down twice and my phone booted back up into android without issue.
So as one user in this thread had mentioned, formatting /data with TWRP 2.6 was the problem.
Hope this helps others avoid a similar issue.
Thanks everyone for all the help. It pointed me in the right direction.
Glad you got it fixed.
I'll be giving these steps a try, having somewhat of the same problem!
i've been having this exact same problem but with TWRP 2.5.0.2 since July. Its been driving me insane and I have not been able to find any one else having this issue until now. I think i might finally try CWM instead as a last measure before I finally give up!
Try TWRP 2.6.3.1 version. It works pretty well even though it's unofficial http://forum.xda-developers.com/showthread.php?t=2262996
Sent from my SAMSUNG-SGH-I337 using XDA Premium 4 mobile app

Soft Bricked i337M. Maybe EFS problem.

I used TWRP to wipe all my partitions under advanced wipe.
I Odin'ed the stock kernel, stock rom and TWRP.
I used TWRP to mount the efs partition, and adb pushed my backed up efs.zip into that partition.
I checked using the TWRP file manager that the files and folders are all in the efs partition.
But after a reboot into TWRP, the efs partition would become empty again, as if I never transfered the files.
And off course, my phone is now stuck at the notorious Samsung logo boot loop.
So why did the files delete themselves after every boot? And is there any way to solve my boot-looping issues?
My current partition size:
Boot (10mb)
System (2135mb)
Data (0mb)
Cache (62mb)
Recover (10mb)
EFS (4mb) it is empty, but still has 4mb?
First question is what firmware were you on before all this? Second question is why did you do all this?
If you were not on mf3 firmware get the stock firmware from sammobile.com and flash that in Odin, PDA. Do not check re-root partition. Hopefully that get your phone to work again.
Wooo hooo it works
Ahh I fixed it! Sorry for the troubles.
I'm glad you got it fixed. But don't mess all that stuff you did.
jd1639 said:
I'm glad you got it fixed. But don't mess all that stuff you did.
Click to expand...
Click to collapse
Yea, curiousity definitely killed the cat. This may be my last of my 9 lives.
Would do sufficient research before attempting theses kind of tasks again.
Thank you. I fixed the problem following several other threads in this forum. Vast amount of knowledge here, just a bit too scattered.

TWRP sayd system not mounted, then rebooted during restore, phone is softbricked

I was bootloader unlocked, latest TWRP installed, systemless root with SuperSU 2.6, cataclysm rom, ex kernel, layers, xposed. I had made a ton of backups and even kept some of them backed up in another locations. I needed to restore a backup in TWRP. At first it wouldn't let me, kept saying that phone system was mounted as read only.
this is my question #1 - How do you mount system for read in TWRP? I see there's an option called "mount," I go in there, i see settings I can select, but I don't see any option to "execute" or "apply" settings (like TWRP has on other screens - swipe to backup, swipe to restore, etc). There's no "clicke here to mount option." what do you do here?
#2 - it finally mounted rw, i think, but after picking my latest backup, it started and then when it got to 19% it reboot the phone. Phone is softbricked.
#3 - I'm very confused about all the checkboxes to restore, and all the checkboxes to wipe.
What should I be wiping and what should I be restoring? When making backups I checked all the boxes.
I had the galaxy nexus before and I knew that phone and clockworck mod inside out. TWRP is confusing and glitchy to me. I'm stuck and work with a phone without an OS and I'm starting to freak out, and don't have A to C cables with me.
Please explain where I went wrong here and how to do things correctly. I want to understand what I'm doing better, not just follow steps.
When you restored, with all the check boxes did you click "system image" for restore?
You should wipe then restore only system, data, and boot.
dontbeweakvato said:
When you restored, with all the check boxes did you click "system image" for restore?
You should wipe then restore only system, data, and boot.
Click to expand...
Click to collapse
Yes, I selected all the boxes, including system image I believe.
I did a wipe. I selected all the boxes. Went back into TWRP and now all my backups are gone. I said reboot, and TWRP said there's no OS installed. I think I deleted everything. I should not have wiped. I do have a backup saved on a computer, it's a folder with lots of .img files inside. How can I get that onto my phone with only having fastboot and TWRP modes available? I mean how can I place it on the phone in a way that TWRP would recognize it and restore from it.
I ended up just flashing the stock google image and that at least gave me a working phone back.
Yes. You beat me to it, that's what I was going to say. You have to reflash. Just remember for future references you only need to backup boot, system, and data( and efs etc). But Not "system image" that'll Bork your stuff up.
dontbeweakvato said:
Yes. You beat me to it, that's what I was going to say. You have to reflash. Just remember for future references you only need to backup boot, system, and data( and efs etc). But Not "system image" that'll Bork your stuff up.
Click to expand...
Click to collapse
I'd like to really understand this better. Do you know why system image borks the phone? Also, when you say efs etc., do you mean "absolutely everything except system image"? (I actually didn't see EFS listed there)
Well boot system and data. But you also need efs cause thats your imei. So just look around and familiarize with what youve found so far. Right now Im trying to flash 6.0.1 with a systemless root. Its kinda goin ridiculous right now because there aren't any directions or suggestions.
If you get to "no OS installed" restoring system image, then system will get you back
Sent from my Nexus 6P using Tapatalk
zgroten said:
If you get to "no OS installed" restoring system image, then system will get you back
Sent from my Nexus 6P using Tapatalk
Click to expand...
Click to collapse
After it said no OS installed, I tried to restore system image from my TWRP backup, and the restore failed and the phone reboot itself at 19% restored. I had to ADB flash the factory system image from google. This brings me back to the original question.
Why was the restore in TWRP failing?
Did you mount system in TWRP before attempting to restore?
Sent from my Nexus 6P using Tapatalk
mistermojorizin said:
After it said no OS installed, I tried to restore system image from my TWRP backup, and the restore failed and the phone reboot itself at 19% restored. I had to ADB flash the factory system image from google. This brings me back to the original question.
Why was the restore in TWRP failing?
Click to expand...
Click to collapse
actually in twrp you could of wiped, then restored boot, system , data and it would of restored everything

Help needed! Firmeware CAN-L11 EU Version

Hello,
i need help. I messed up my phone while trying to repair my only read mode system partition after boot.
Current state:
Phone CAN-L11 with EU Firmeware and working TWRP Recovery.
I did a full wipe, but have no data partition to restore, because this couldn´t be saved with twrp while i made my first nand backups during no read access to data partition.
My phone always shows 2 times the huawei logo and then boot in erecovery from huawei where i tried to restore, but it shows always "fail to get data" (wifi works).
When i restore all partitions backups that i own via twrp i miss the data partition (is the cause why it wont boot - isn´t it?)
Now i searched for any img that i can use to get my phone working again - anyone has a tip what img i could use (i have a huawei update extractor) - through twrp or fastboot.
Could anyone help me with a twrp backup or a img file of data partition - or has another tip how to get my phone working again?
Thanks for tips!
merlin21 said:
Hello,
i need help. I messed up my phone while trying to repair my only read mode system partition after boot.
Current state:
Phone CAN-L11 with EU Firmeware and working TWRP Recovery.
I did a full wipe, but have no data partition to restore, because this couldn´t be saved with twrp while i made my first nand backups during no read access to data partition.
My phone always shows 2 times the huawei logo and then boot in erecovery from huawei where i tried to restore, but it shows always "fail to get data" (wifi works).
When i restore all partitions backups that i own via twrp i miss the data partition (is the cause why it wont boot - isn´t it?)
Now i searched for any img that i can use to get my phone working again - anyone has a tip what img i could use (i have a huawei update extractor) - through twrp or fastboot.
Could anyone help me with a twrp backup or a img file of data partition - or has another tip how to get my phone working again?
Thanks for tips!
Click to expand...
Click to collapse
I think that you need a system.img, so you can flash. This system imagem would write everything you need, so you can boot normally.
Have you tried to dowload @bluesmoothie backup from dropbox from the Root and Recovery post?
Here is the link, in case you don't find it https://www.dropbox.com/sh/qrk0fbpn5rnukxn/AAAmhFwBTNoqq0sWfCH-VMHLa?dl=0
Sent from my victara using XDA Labs
Here the full Backup for the CAN-L11:
https://drive.google.com/open?id=0B134drJ4-Ed0R3VSY3A5NGpjVWc
Format /data, reboot recovery and than restore from backup. After the restore is complete make a wipe.
I restored my system from twrp (original first save). But that did not help.
After that i loaded the can-L11c432 update.zip from huawei and extracted with others the system.img - that also did not help to boot.
Tomorrow i flashed the orignal recovery.img from c432 but i did not find an update.zip wich works to manually flash in stock recovery.
@Vinnom the link you shared leads to twrp.img (no system.img).
@-=MoRpH=- thanks, i will try and report back. Is this anyway a chinese version in there? I think i have the same struggle you had days back. Is your phone completely working again?
So sick that my phone did not work. Now working with my "old" LG G2...
I report back later - first family dinner
merlin21 said:
I restored my system from twrp (original first save). But that did not help.
After that i loaded the can-L11c432 update.zip from huawei and extracted with others the system.img - that also did not help to boot.
Tomorrow i flashed the orignal recovery.img from c432 but i did not find an update.zip wich works to manually flash in stock recovery.
@Vinnom the link you shared leads to twrp.img (no system.img).
@-=MoRpH=- thanks, i will try and report back. Is this anyway a chinese version in there? I think i have the same struggle you had days back. Is your phone completely working again?
So sick that my phone did not work. Now working with my "old" LG G2...
I report back later - first family dinner
Click to expand...
Click to collapse
Inside the folder twrp and its subfolders there it is system.img. I'm downloading it myself.
Sent from my victara using XDA Labs
Share if you have another workarounds for me
Gesendet von meinem LG-D802 mit Tapatalk
@merlin21 yes it sounds like my problem after I tried to flash the emui5 beta.
My phone is fully working again with the backup I posted.
This is not the Chinese version, if nothing works, you can try the caz ROM. But there are massive problems with the gapps, they are not included in the rom.
Gesendet von meinem HUAWEI CAN-L11 mit Tapatalk
@ -=MoRpH=-
i just flashed the twrp.img with fastboot from xelfmade v22.12. and then rebooted twrp.
Then formated data and confirmed with yes - rebooted recovery and tried to restore your twrp. It did not restore and aborted instantly with the error message
during restoreing cust...
extractTarFork() proecess ended with ERROR: 255
what could that be?
IT WORKS! Thanks @murph... I had to use the cust from my backup, but with your data partition it successfully booted again. Locking forward if i now have still the problem with read only system partition. I am away setting up phone again (and of course rooting, modifying etc.. but FIRST do a full backup after basic setup and safe in PC !!!)
Thanks!
P.S. how did you manage to back up data partition in recovery? I thought this wouldn't be possible?! What is the cost for having this full working twrp?
PPS. Somehow knock on screen for screenshot does not work - could be, that i have to log in with huawei id... does it work for you morp?
Somehow knock on screen for screenshot does not work - could be, that i have to log in with huawei id... does it work for you morp?
Click to expand...
Click to collapse
That only work if the is not rooted... Idk whats up with that, but for now i use the quicksetting screenshot function.
Somehow it worked with my rooted device before. Must be the decrypted data partition?
With the recovery of your backup I could not access data or change memory from data to sd. What version do you use?
I flashed xelfmades v22 and now have rw access and could backup all partitions and restore. Root and xposed modules everything works, just the knock on screen to capture don't...
merlin21 said:
IT WORKS! Thanks @murph... I had to use the cust from my backup, but with your data partition it successfully booted again. Locking forward if i now have still the problem with read only system partition. I am away setting up phone again (and of course rooting, modifying etc.. but FIRST do a full backup after basic setup and safe in PC !!!)
Thanks!
P.S. how did you manage to back up data partition in recovery? I thought this wouldn't be possible?! What is the cost for having this full working twrp?
PPS. Somehow knock on screen for screenshot does not work - could be, that i have to log in with huawei id... does it work for you morp?
Click to expand...
Click to collapse
I have the same problem! What do you mean by "I had to use the cust from my backup" ? Sadly i dont have any data from my own backup..
can you tell me what to do to get the backup from @murph to work without error?
--solved.
P1xl said:
--solved.
Click to expand...
Click to collapse
May I ask how?
I'm kinda stuck personnaly. I have tried both Nand backups but no cigar. Still can't boot. I had the Data issue which I managed to get rid of.
I still end up with a ExtTarFork 255 kind of error. I tried to change the files attributes via adb shell, but it failed so I've got an OS-Less phone...
Any help would be greatly appreciated.
rak500 said:
May I ask how?
I'm kinda stuck personnaly. I have tried both Nand backups but no cigar. Still can't boot. I had the Data issue which I managed to get rid of.
I still end up with a ExtTarFork 255 kind of error. I tried to change the files attributes via adb shell, but it failed so I've got an OS-Less phone...
Any help would be greatly appreciated.
Click to expand...
Click to collapse
I copied the backup, which is linked somewhere in this thread, to my sdcard and restored it on my Nova using twrp. The extractfork issue showed up while restoring '/cust' so i disselected cust in the restoring menu. After that the restoring worked and my nova was able to boot.
Hope this is any help to you.
P1xl said:
I copied the backup, which is linked somewhere in this thread, to my sdcard and restored it on my Nova using twrp. The extractfork issue showed up while restoring '/cust' so i disselected cust in the restoring menu. After that the restoring worked and my nova was able to boot.
Hope this is any help to you.
Click to expand...
Click to collapse
That didn't do the trick for a while, or I might have forgotten a step, but deselecting CUST did the trick.
Thanks for the tip!
Although, maybe flashing the Cust partition I found in one of the two upgrade zips via fastboot might have helped? I dunno...
But in short, for those who haven't followed through, here's what I did, but I'm not sure this is why it worked:
1. Bricked my device : be sad;
2. DLed all the posted Nandroid backup on this thread and others;
3. With fastboot, reflashed TWRP from Xelfmade using "fastboot flash recovery twrp.img";
4. Flashed the CUST.img I found in the UPDATE.APP of the update_data_full_CAN-L11_hw_eu.zip; or maybe the other, only one of the two seem to have it; I extracted it using Huawei Firmware Extractor; using "fastboot flash cust cust.img";
5. Created a "fake" backup to create the right folder structure on my SD (TWRP Couldn't see the backups) and put the Nandroid Backups I DLed earlier in it;
6. Reboot in TWRP and Restore all partitions except CUST;
7. Reboot, sweat, wait, cry, roll on the floor in fear, heard the huawei startup sound, cried as if it was my first born child;
8. Setup the fone and profit; then enjoy Nova goodness;
92.324. and probably most important, TWRP BAAAACKUUUUP!!!!!
All done!
Thanks for your help my phone is saved with your method!!!
i downgraded my MLA-L03 variant with this, but now im stuck in french language with no other languages to choose from
Vinnom said:
I think that you need a system.img, so you can flash. This system imagem would write everything you need, so you can boot normally.
Have you tried to dowload @bluesmoothie backup from dropbox from the Root and Recovery post?
Here is the link, in case you don't find it https://www.dropbox.com/sh/qrk0fbpn5rnukxn/AAAmhFwBTNoqq0sWfCH-VMHLa?dl=0
Sent from my victara using XDA Labs
Click to expand...
Click to collapse
someone please make this thread sticky!!!!!!!
there are some guides in internet how to get nougat for nova and that is were I broke my phone. I was searching solutions for a week, DLed Flahsed tons of things nothing worked. this one fully worked!!!!!!!!!!!!!!!!!!!!
rak500 said:
That didn't do the trick for a while, or I might have forgotten a step, but deselecting CUST did the trick.
Thanks for the tip!
Although, maybe flashing the Cust partition I found in one of the two upgrade zips via fastboot might have helped? I dunno...
But in short, for those who haven't followed through, here's what I did, but I'm not sure this is why it worked:
1. Bricked my device : be sad;
2. DLed all the posted Nandroid backup on this thread and others;
3. With fastboot, reflashed TWRP from Xelfmade using "fastboot flash recovery twrp.img";
4. Flashed the CUST.img I found in the UPDATE.APP of the update_data_full_CAN-L11_hw_eu.zip; or maybe the other, only one of the two seem to have it; I extracted it using Huawei Firmware Extractor; using "fastboot flash cust cust.img";
5. Created a "fake" backup to create the right folder structure on my SD (TWRP Couldn't see the backups) and put the Nandroid Backups I DLed earlier in it;
6. Reboot in TWRP and Restore all partitions except CUST;
7. Reboot, sweat, wait, cry, roll on the floor in fear, heard the huawei startup sound, cried as if it was my first born child;
8. Setup the fone and profit; then enjoy Nova goodness;
92.324. and probably most important, TWRP BAAAACKUUUUP!!!!!
All done!
Click to expand...
Click to collapse
Hi. First of all, thanks for the tutorial. I've tried it but I have one problem. My /data particion is ext4. Should be f2fs. The thing is I can't convert coz my /data particion is unvisible
Can any help, please?
Bunkier said:
Hi. First of all, thanks for the tutorial. I've tried it but I have one problem. My /data particion is ext4. Should be f2fs. The thing is I can't convert coz my /data particion is unvisible
Can any help, please?
Click to expand...
Click to collapse
Frankly, I don't know. I had not modified the partitions prior to bricking my phone, so I think the partitioning was OK. However, I think one of the TWRP availble in this forum can format Data partition properly, which would utlimately allow you to select which File Format you want. I haven't tried it myself, and I haven't been able to do much with TWRP since I flashed Lineage unfortunately. Most of my Mods were just upgrading and I had to ADB Sideload pretty much everything since I flashed Lineage...
Sorry I couldn't be more helpful than that!

[Help] Stuck in fast boot- boot loader after restoring twrp backup?

[Solved (look at bottom of post)]
so, hopfully this is in the right place.
Following the procedure I've done on my nexus 6p many times over; I created a TWRP backup on my 6t then tried restoring the backup I made with twrp and when it finished I pressed reboot to system. The device then only booted into twrp. I saw it was on the "a" partition and I knew I was previously on the b partition so I manually switch partitions and now I'm stuck in fastboot boatloader I have tried flashing a temp twrp.img but im getting an error "FAILED (remote: 'Failed to load/authenticate boot image: Load Error')" in fastboot
After that I switched active partition in fast boot and got into twrp but my data appears to be encrypted and after restoring sys,data,efs,vendor (skipping boot as it holds the recovery now) I only have fast boot in both a/b partitions. I'm going to try to fast boot twerp then install twerp permanently and see if i can get a wotking twrp if not then ill have to get a factory image to get back to stock but was hoping to get some data off but whatever..
I'm kind of new to this a/b partition setup. any help is appreciated.
Edit: for future reference All I was doing was trying to restore a backup? how do I restore a backup on an a/b partition system? As far as I know I did it right...
1) remove lockscreen pin ect..
2) backup boot,sys,ven,data
When restoring
1) mount partitions
2) select restore backup and restore all .....
What am I missing?
____
Solved:
twrp for 6t is borked when it comes to backing up/ restoring...
The version in question: twrp-installer-fajita-3.2.3-1.zip
I restored my 6t to stock with msmdownloadtool and reinstalled twrp then made a test backup. After restoring it I was left in a twrp bootloap and encrypted data partition.
I don't think you should ever need to manually switch slots.
If you are on slot A, and flash an update, it will install to slot B. When you restart your phone, it will automatically switch to B for you.
Also, you shouldn't be flashing the TWRP.img, but booting it instead.
You could try starting fresh with the msmdownloadtool which is found in these forums.
fireeyeeian said:
[Solved (look at bottom of post)]
so, hopfully this is in the right place.
Following the procedure I've done on my nexus 6p many times over; I created a TWRP backup on my 6t then tried restoring the backup I made with twrp and when it finished I pressed reboot to system. The device then only booted into twrp. I saw it was on the "a" partition and I knew I was previously on the b partition so I manually switch partitions and now I'm stuck in fastboot boatloader I have tried flashing a temp twrp.img but im getting an error "FAILED (remote: 'Failed to load/authenticate boot image: Load Error')" in fastboot
After that I switched active partition in fast boot and got into twrp but my data appears to be encrypted and after restoring sys,data,efs,vendor (skipping boot as it holds the recovery now) I only have fast boot in both a/b partitions. I'm going to try to fast boot twerp then install twerp permanently and see if i can get a wotking twrp if not then ill have to get a factory image to get back to stock but was hoping to get some data off but whatever..
I'm kind of new to this a/b partition setup. any help is appreciated.
Edit: for future reference All I was doing was trying to restore a backup? how do I restore a backup on an a/b partition system? As far as I know I did it right...
1) remove lockscreen pin ect..
2) backup boot,sys,ven,data
When restoring
1) mount partitions
2) select restore backup and restore all .....
What am I missing?
____
Solved:
twrp for 6t is borked when it comes to backing up/ restoring...
The version in question: twrp-installer-fajita-3.2.3-1.zip
I restored my 6t to stock with msmdownloadtool and reinstalled twrp then made a test backup. After restoring it I was left in a twrp bootloap and encrypted data partition.
Click to expand...
Click to collapse
I'm currently stuck in TWRP with encrypted data after restoring a backup. I didn't know you couldn't restore backups on this phones. That sucks. I guess I'm going to have to start over now. That really really sucks.
imucarmen said:
I'm currently stuck in TWRP with encrypted data after restoring a backup. I didn't know you couldn't restore backups on this phones. That sucks. I guess I'm going to have to start over now. That really really sucks.
Click to expand...
Click to collapse
Yup, I felt the same.. it's a huge bummer especially when you get it all set up and perfect. Use msm to fix it if you can't use twrp. Hopefully twrp gets fixed soon (I'm really surprised I can't find more people who have noticed this or even twrp team talking about it) for now Im waiting for proof it works on the op6t. I even tried to use Chainfire's flashfire to make a backup and.. no it doesn't work.
fireeyeeian said:
Yup, I felt the same.. it's a huge bummer especially when you get it all set up and perfect. Use msm to fix it if you can't use twrp. Hopefully twrp gets fixed soon (I'm really surprised I can't find more people who have noticed this or even twrp team talking about it) for now Im waiting for proof it works on the op6t. I even tried to use Chainfire's flashfire to make a backup and.. no it doesn't work.
Click to expand...
Click to collapse
I think I just hard bricked my phone. https://forum.xda-developers.com/oneplus-6t/help/bricked-phone-t3914413
imucarmen said:
I think I just hard bricked my phone. https://forum.xda-developers.com/oneplus-6t/help/bricked-phone-t3914413
Click to expand...
Click to collapse
Use Msm download tool:
https://www.google.com/amp/s/forum....-msmdownloadtool-v4-0-oos-9-0-5-t3867448/amp/
I think that's the right post but make sure it matches your device. I used msmdownloadtool around 6 time just testing twrp and only had one hiccup where Msm wasn't detecting my one plus 6t but I eventually got it working.
use the other twrp unofficial but problem you had with would be fixed with big file system fat32 can't do it right
ecompton59 said:
use the other twrp unofficial but problem you had with would be fixed with big file system fat32 can't do it right
Click to expand...
Click to collapse
Could you post a link to it and are you sure? I used the unofficial version so which one are you talking about? I'd really not like to have to re-setup my daily driver from scratch.
https://forum.xda-developers.com/on...overy-unofficial-twrp-touch-recovery-t3861482 your using early version of twrp the black one is made by same guy download unofficial twrp.zip not twrp.img reboot recovery flash twrp.zip then magisk it may work if not then format data (erases phone) then twrp,magisk reboot recovery to see if it stuck I flash magisk again when it starts up go to magisk thread get the manager 18.1 don't insall it
ecompton59 said:
https://forum.xda-developers.com/on...overy-unofficial-twrp-touch-recovery-t3861482 your using early version of twrp the black one is made by same guy download unofficial twrp.zip not twrp.img reboot recovery flash twrp.zip then magisk it may work if not then format data (erases phone) then twrp,magisk reboot recovery to see if it stuck I flash magisk again when it starts up go to magisk thread get the manager 18.1 don't insall it
Click to expand...
Click to collapse
Which one? I've tried the 3.2.3.28 last and restoring didn't work. Should I try the most recent installer in the list? And can you confirm that backup&restoring works on the one plus 6t? Also is there anyway to backup my phone without twrp before I try this? I'd really would not like to have to use msm again?
sorry that didn't help format data then flash twrp then magisk should boot without msm
---------- Post added at 01:06 PM ---------- Previous post was at 12:52 PM ----------
i had to use extfat format on htc 8gb backup to get it to work maybe devs will fix that
Has there been an improvement on twrp for the 6t yet? Just curious if I can rely on a backup is there any updates?

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