I have an LG-v480 tablet which I have pretty much almost bricked, and wrote a thread about it here:
https://forum.xda-developers.com/g-...ng-lg-v480-t3807713/post76913614#post76913614
Since then, I've revived it a bit! I got it hooked up to a computer and manually dd'd the partitions from stock back onto the actual block device (minus the laf partition), and it came to life, enough to get to some sort of bootloader with fastboot, then I got the bumped twrp on it, and was able to load twrp 2.8. It now boots into twrp without the sdcard present, and I'm actually able to flash the recovery partition from inside twrp and see reflected updates upon reboot!
That being said, I have a different problem now. The recovery partition is clearly working, but I cannot boot into the bootloader anymore OR system. I've flashed both CM and LineageOS (from the data partition, which isn't getting wiped in all this) and it's reported success, but from twrp OR with a combination of button presses, the tablet just reboots back into TWRP.
Since I now have an ADB shell and everything, I figured I have options to get past this, but I'm not sure what to do next. Any advice?
Related
Hi. I've just updated CM13 to the latest nightly using TWRP, but now the system just boots into TWRP - that's whether I select boot system, recovery, or bootloader. I tried restoring from a TWRP backup or another copy of the nightlies zip - it all seems to work fine but doesn't solve the problem. I can connect to the 'recovery' device using adb but adb restart bootloader just loads TWRP again. I've tried wiping first the dalvik/cache, then everything but the internal card, then finally everything but nothing seems to work.
I did get something a little bit like this a few days ago because SuperSU was complaining that I needed to update the binary. I let it do it the way that it suggested one does when TWRP is installed and afterwards couldn't reboot into system, but after a few minutes of frustration sorted things by wiping various partitions.
I attempted to load the full system restore files (cm-13.1-ZNH2KAS29G-crackling-signed-fastboot-74bb753396.zip) using TWRP but that didn't work (I imagine because they're designed to be run via fastboot). I tried loading them via the ADB sideloader option included in TWRP but it failed after a few seconds (I think the message was 'transmitting 0.0x'
I opened that zip and copied the various files to the external card, but I then baulked at installing the image files manually because the only partition option I'm given is boot and my understanding is that each image file should go into its own partition.
The only other potentially pertinent information I can think of:
TWRP keeps reporting "E: Unable to find partition size for '/recovery'"
Has anyone got any ideas please? I had been musing that my next phone would have OTG and NFC, but I wasn't planning to upgrade just yet if I don't absolutely have to.
Have you got it fixed? And if yes - how? I am stuck in a similar situation and can't find a solution for it. Tnx in advance.
Hi everyone,
I tried to update my rooted Pixel C with Android 8 and TWRP 3.1.0.0 from August build to September build with FlashFire.
All of the following have I done on my Nexus 5x as well and it worked as a charm there.
Therefore i dl'd the corresponding zip-file from google dev page and started the update with FF. It said to me it can update the boot, system, recovery and vendor partition so I unchecked the recovery partition only to keep TWRP. I also told FF it should include SuperSU again to root the new Android.
After the update the device was unrooted, so i tried to start into recovery to install superSU manually. But TWRP was gone and i get everytime the android on the back with the text "no command".
Therefore I tried to flash TWRP with NRT again. But after the flash the device always starts into TWRP and Android isn't starting anymore.
I can use NRT again to flash Android without loosing my data but than TWRP is gone again.
So either the device always starts into TWRP or I have no recovery installed.
Anyone an idea what i can do to flash TWRP again and to fix the boot order or whats broken than?
Regards,
flattervieh
I don't have the C but here's what I would try. First, have your device booting normally with the stock recovery. Then use fastboot to boot into TWRP, not flash it. When it boots into TWRP then flash supersu. From TWRP then boot back into the bootloader and then flash TWRP with fastboot.
Flash the latest (beta?) TWRP. It allows reading the encrypted data folder.
Short notice, i'm still struggling with the problem.
In the meantime I tried the following:
1. I temporarely booted TWRP 3.1.0.0, with this version I was not able to encrypt the data partion (always invalid key) but I was able to see the system partition and I installed SuperSU. After that i restarted into the bootloader and flashed TWRP 3.1.0.0.
This led to the same phenomenon, that my pixel always boots into TWRP and not into Android itself.
2. Same thing as before but with TWRP 3.1.1.1.
With this version I was able to see the size of the data partition, but I was also not able to read or write onto it. (Again invalid code) I installed SuperSU and made a device restart without flashing TWRP 3.1.1.1.
This led to a totally softbricked device with a boot into "no command" screen.
After flashing Android again via fastboot Android starts correctly and I can use the device but root is still not working.
Regards
I'm not sure why twrp isn't sticking. But the android on its back with "no command"is the stock recovery. To get into it simultaneously press and release the power and vol up keys. You might have to try it a few times as the timing can be very finicky. From there you can boot into the system, you don't need to flash the factory image and start all over.
So i unlocked my bootloader few days ago, installed twrp and magisk. Everything was working fine , so I decided to unlock critical to flash bootloader in the future if required. It was done successfully and the fastboot own device command shows that both are unlocked. But when I rebooted it kept taking me to twrp and shows unable to mount data and storage and then rebooted. I went to twrp recovery through fastboot and tried to restore a previous backup for which it restored the system portion and said data failed to mount. When I try mounting data and storage manually, it does not let me tick it. Can someone please help, I used to do rooting back in the nexus 4 days and just not familiar with this new partition a b system.
Thanks
EnIXmA said:
So i unlocked my bootloader few days ago, installed twrp and magisk. Everything was working fine , so I decided to unlock critical to flash bootloader in the future if required. It was done successfully and the fastboot own device command shows that both are unlocked. But when I rebooted it kept taking me to twrp and shows unable to mount data and storage and then rebooted. I went to twrp recovery through fastboot and tried to restore a previous backup for which it restored the system portion and said data failed to mount. When I try mounting data and storage manually, it does not let me tick it. Can someone please help, I used to do rooting back in the nexus 4 days and just not familiar with this new partition a b system.
Thanks
Click to expand...
Click to collapse
I would one if two things. First, try fastbooting the stock boot.img to whatever current rom your on, and let it boot up. If successful, then go back to bootloader/fastboot mode, fastboot temporary twrp, then once in twrp, flash the twrp.zip, custom kernel, then magisk. Hopefully that fixes it. If not, then dirty flash your rom, let it boot up, then go back and do the twrp stuff :good:
Yea that fixed it.. thanks
Hello,
I have a Mi Max 3 6GB/128GB which I got from the UK which arrived unlocked and with Global Stable ROM installed which actually updated to V10.3.3.0.PEDMIXM by OTA - I tested.
fastboot getvar anti shows failed, so I assume no Anti Rollback Protection, which I thought a little strange, it being MIUI 10 with (after OTA) June 2019 security patch.
I spent the last couple weeks setting up the phone to my liking (I have 300 apps installed) and finally finished yesterday.
Then I wanted to uninstall some Google/Facebook/Xiaomi bloatware using the excellent "Xiaomi ADB/Fastboot Tools".
I was pretty careful in my opinion to only remove the safe ones (the tool claims to only show you the safe ones) like Music, Video, MiPay, MiCloud, MiForum, MiSIM and all Facebook in the ADB section of the tool.
The I switched in fastboot and thought it would be a good idea to wipe Cache (nothing else).
Upon restart the Mi Max 3 first shows the black boot screen with unlock written at the bottom, then changes to the normal boot boot screen with MIU and the points at the bottom showing that it is busy booting. It stayed there for a while and I thought maybe it was rebuilding the cache and it took that long, but after 30 min still no luck.
Then I fired up the "Xiaomi ADB/Fastboot Tools" on my PC again and it told me the phone was in ADB mode, I could reboot into system mode, where the same thing happened - no progress in booting.
I cannot turn off my phone either, but I can switch from sastem boot (which gets stuck) into fastboot mode via ADB.
Would someone know what's wrong and what I can do to get my phone out of that bootloop while hopefully maintaining all my data and setups, on which I worked for weeks?
Thank you so much for your help!
P.S .: In case it could help: I could read out the phone properties of the Mi Max using the "Xiaomi ADB / Fastboot Tools" while it was softbricked, meaning the ro. init. persist. sys. and dalvik. values of the smartphone. I am happy to post them here, if requested.
Hi,
Do you have an SD card? If so, remove it, because as you cleared the cache, I think it might be a problem with encryption (lost reference).
In your case, I believe a reset will work again, but you will lose application configuration data. Via ADB you can backup files only.
If you do not have unlock bootloader, be very careful as you will not be able to flash TWRP or others.
Good luck!
Thanks, the phone came from the vendor with Global Stable ROM and unlocked. It may be an unofficial unlock, though I was able to install OTAs.
I don't have SDCard.
How can I do ADB backup?
I was able to flash official TWRP just a few minutes but it couldn't access data, maybe because it is encrypted. Now I think I will try and install latest Orange Fox r10 stable, which I think should be able to handle decryption, so that maybe I will be able to get at my date.
Any other advice?
Hi,
Now that you have TWRP, clear cache / dalvik from TWRP and try starting again, maybe start system.
About copy via adb follows a link below:
https://www.lifewire.com/use-minimal-adb-and-fastboot-4582201
in step 2
"
The command to move files from your computer to your phone is adb push.
To move files from your phone to your computer the command is adb pull.
"
Through TWRP you may also be able to back up. Go to (mount partitions) and select all partitions.
Make sure the TWRP MTP option is on, it will allow the device to be mounted via usb on your computer.
I use TWRP I use nijel8, it works very well.
https://forum.xda-developers.com/mi-max-3/development/recovery-twrp-3-2-3-1-nitrogen-t3866084
If you can't launch system, you will have to reinstall the Rom.
Good luck!
PS.
More help for adb.
https://forum.xda-developers.com/android/help/adb-fastboot-commands-bootloader-kernel-t3597181
Thanks for your advice!
I first used the official TWRP and I was able to flash it and start it.
But then the wipe of cache and dalvik failed.
And I could not mount data etc..
When I tried to repair the file system with TWRP I got error 255 - unable to repair data from fsck.f2fs.
Then I saw in your signature that you use nijel8's TWRP and I read that thread, and I started to understand, that my TWRP errors most likely originate from TWRP not being able to decrypt my partitions.
However, towards the end of the thread it seemed that nijel8 stopped working on that project and then Xiaomi once again changed the encryption in MIUI 10/Pie and so it was recommended first to use an obscure Chinese TWRP and then to move on to Orange Fox Recovery Project, which supposedly can handle the decryption better. So that's what I got and I am just about to install it and see if I can rescue or even repair anything.
If you have any other tips for me, I would be very grateful.
You have explored the possibilities well, at the moment I dont have more options regarding current system recovery / backup.
The encryption error resolves you by formatting the user partition by TWRP, in the option to format f2fs plus the installation of a custom Rom or Xiaomi.eu.
Look for tutorials and other reviews before testing these procedures.
Remember that there is a big achance of your ARB model as well.
Good luck.
PS. You can try dirty flash. Find an recovery Rom same version, and flash via TWRP.
Did standard unlock bootloader (went fine)
Moved a TWRP zip onto phone sd root directory (twrp-3.4.0-0-guacamole-unified-Q-mauronofrio.zip)
adp fastboot boot twrp-3.4.0-0-guacamole-unified-Q-mauronofrio.img. (went fine)
But when I look for the zip file (or any system files) it does not show up , even in TWRP file manager.
Redid data wipe and it tells me "Failed to mount /system_root and /vendor
I am 99% sure that its just because these will not mount:
Does anyone have any idea what I can do to get these mounted to start a regular TWRP flash ?
Well I tried adjusting data format and ended up losing the Stock Rom.
And the stuff will still not mount.
UPDATE, rewiped data and got stock rom to load.
Now Data will load but vendor will not.
UPDATE : data and vendor will mount after data wipe. But still cannot see anything that is placed on device.
Such as the zip files I need to install.
UPDATE: now I sideloaded TWRP onto new phone, but now cannot get it to reboot into Rom.
Its odd after plugging it in , it went to a stock recovery even when TWRP was installed.
Found the issues, finally had to run MSM download tool and fix everything from there and start from scratch.
Ended up installing TWRP from fastboot flash recovery image.
Now to get root going on it and magisk.
What device do you have?
You're in the 7T forum but saying you used the 7 Pro twrp.
If you're using 7T, the reason why you don't see internal storage is because TWRP cannot decrypt on OOS (this is not because of a mounting error, this is simply due how oneplus has implemented their encryption).
And on 7T you don't need a zip of any sort to install twrp.
Reading the actual twrp thread would be a good start.
Lossyx said:
What device do you have?
You're in the 7T forum but saying you used the 7 Pro twrp.
If you're using 7T, the reason why you don't see internal storage is because TWRP cannot decrypt on OOS (this is not because of a mounting error, this is simply due how oneplus has implemented their encryption).
And on 7T you don't need a zip of any sort to install twrp.
Reading the actual twrp thread would be a good start.
Click to expand...
Click to collapse
Yes, I read though the threads, But got so bombarded with pages of stuff kind of lost track.
This is why I posted . Also it is a combined Christmas gift for my daughter that she cannot know I am working on. So I think I tried to rush it when she was in school.
Found out about the decryption part after I started the process. Then it was too late and ended up having to start over with tools.
It was a newb move to end up this far and try to rush it.
People did help me get back on track and now I am working on figuring out Magisk. (good help on magisk threads).
Thanks for your response.
eracet said:
Well I tried adjusting data format and ended up losing the Stock Rom.
And the stuff will still not mount.
UPDATE, rewiped data and got stock rom to load.
Now Data will load but vendor will not.
UPDATE : data and vendor will mount after data wipe. But still cannot see anything that is placed on device.
Such as the zip files I need to install.
UPDATE: now I sideloaded TWRP onto new phone, but now cannot get it to reboot into Rom.
Its odd after plugging it in , it went to a stock recovery even when TWRP was installed.
Found the issues, finally had to run MSM download tool and fix everything from there and start from scratch.
Ended up installing TWRP from fastboot flash recovery image.
Now to get root going on it and magisk.
Click to expand...
Click to collapse
Magisk IS your root