Hi guys, I backed up all partitions using the DD command prior to installing TWRP. I then restored every thing using QPST.
I am wondering which partition is responsible for Widevine DRM in LG phones as I now have Widevine L3 despite the fact that the phone appears to be in official state (in download mode)
Thank you
Related
I decided to unlock it, then im stuck in bootloop... At first it says failed, then after i press it again, it says succrss, but i got a bootloop...
What causing this problem?
AndreIrawan97 said:
I decided to unlock it, then im stuck in bootloop... At first it says failed, then after i press it again, it says succrss, but i got a bootloop...
What causing this problem?
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Click to collapse
When you unlock the bootloader via sony's official way (using fastboot mode) your security related contents (DRM keys) in trim/TA partition gets erased and you will have access to install a new custom rom . But while unlocking is under progress, say for any reason it gets interrupted,there is a chance that all security related data might not be erased fully / In other words there is a chance that TA partition might have been corrupted
Usually when your phone boots its verifies for the intactness of TA/Trim partition, either it should have all security data (locked bootloader) or fully erased security related data (unlocked bootloader), if partial security information is available, it considers that TA partition has been tampered and will refuse to boot
gokukaushik said:
When you unlock the bootloader via sony's official way (using fastboot mode) your security related contents (DRM keys) in trim/TA partition gets erased and you will have access to install a new custom rom . But while unlocking is under progress, say for any reason it gets interrupted,there is a chance that all security related data might not be erased fully / In other words there is a chance that TA partition might have been corrupted
Usually when your phone boots its verifies for the intactness of TA/Trim partition, either it should have all security data (locked bootloader) or fully erased security related data (unlocked bootloader), if partial security information is available, it considers that TA partition has been tampered and will refuse to boot
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Click to collapse
So.... How to properly unlock it? And what should i do if i got a bootloop again?
AndreIrawan97 said:
So.... How to properly unlock it? And what should i do if i got a bootloop again?
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Click to collapse
Right now if you are able to boot into your phone, leave it, you have already unlocked/relocked it. If you are in the same situation again,
Steps
1) Relock your bootloader via flashtool
2) Now flash a fully bundled sony official ftf via flashtool.(This will ensure that if any discrepencies in TA partition are there, will be corrected)
Note: This will not restore your DRM keys.I am afraid if you have not backed up your DRM keys during first unlocking trail.they are lost.
3) Follow sony's official bootloader unlock method (www.developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader)
gokukaushik said:
Right now if you are able to boot into your phone, leave it, you have already unlocked/relocked it. If you are in the same situation again,
Steps
1) Relock your bootloader via flashtool
2) Now flash a fully bundled sony official ftf via flashtool.(This will ensure that if any discrepencies in TA partition are there, will be corrected)
Note: This will not restore your DRM keys.I am afraid if you have not backed up your DRM keys during first unlocking trail.they are lost.
3) Follow sony's official bootloader unlock method (www.developer.sonymobile.com/unlockbootloader/unlock-yourboot-loader)
Click to expand...
Click to collapse
So... Can i just restore TA and unlock it? Because i have a TA backup
AndreIrawan97 said:
So... Can i just restore TA and unlock it? Because i have a TA backup
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Click to collapse
Good that you had a TA backup before unlocking.If you restore your TA backup and unlock it again , it will again erase your security keys, which will lead you to where you started.What is your requirement . Unlock your bootloader only if you want to install a custom rom. Believe me, TA partition is not the one to be played with; it can even render your mobile into a costly paper weight(hardbrick), if it gets messed up pretty bad . If you are already unlocked do not try to restore your TA partition,and unlock again.Its already unlocked and doesnt make any sense to unlock it again ; Restore it only when you want to go back to a locked bootloader.
Does unlocking bootloader causes phone to lose L1 Widewine?
CrushedMango said:
Does unlocking bootloader causes phone to lose L1 Widewine?
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Click to collapse
No
CrushedMango said:
Does unlocking bootloader causes phone to lose L1 Widewine?
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Click to collapse
No. Widevine L1 is stored in persist.img so as long as you don't mess with your partitions much then you won't have a problem i.e unlocking bootloader and flashing custom ROMs and kernels is perfectly fine
Robert314 said:
No. Widevine L1 is stored in persist.img so as long as you don't mess with your partitions much then you won't have a problem i.e unlocking bootloader and flashing custom ROMs and kernels is perfectly fine
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So say I factory reset and install customs roms shouldn't make it L3, correct?
When will you mess with partition?
CrushedMango said:
So say I factory reset and install customs roms shouldn't make it L3, correct?
When will you mess with partition?
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The only person I know who's gone to L3 is a Dev who did a lot of messing with different partitions
Robert314 said:
The only person I know who's gone to L3 is a Dev who did a lot of messing with different partitions
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Thank you
It works post root on Arrow Os. Attached a screenshot.
You can have Widevine L1 on custom Roms.
https://forum.xda-developers.com/t/4267263/page-2#post-84919939
You can lost Widevine L1 on official MIUI Roms even without unlocking or root.
https://forum.xda-developers.com/t/4281695/
* Cetain devices have been losing their Widevine L1 certificate randomly. The reason is unknown to us, so don't bother asking.
* Certificate renewal is done via Settings -> Passwords & security -> Fingerprint unlock -> Fingerprint payments -> Widevine (L1)
https://xiaomi.eu/community/threads/info-widevine-l1-support.61064/
I have been using my XT1635-02 for a couple of years. Somehow I lost the L1 Widevine and now it shows as L3 on DRM info. I have never unlocked nor rooted or installed a custom rom on my phone. It is running Oreo 8.0. It was working couple of months ago. Will unlocking, flashing stock rom and relocking fix this?
I'm yet to get my hands on mine, But I wanted to know: Does Realme GT ME loses the widevine L1 upon unlocking bootloader/Flashing custom roms? Can you recover it by getting back to stock rom and locking bootloader? And also if there is any way to backup it or restore the certificates. Thanks in advance.
no you will not lose it mine is rooted and its L1 still
Hello! I got a problem with my OnePlus 11, as I checked the playback settings on netflix, my widevine says it is L3. Is there anyway to fix this and bring it back to L1? I seriously don't know what happened.
Hello,
The post at this moment just under yours has a part called "Return your phone to unlock and unroot : Step 2 - Relock the bootloader".
Beware and be sure of what you are doing though. With this phone, relocking the bootloader while having any modified system partition (as init_boot for exemple) means a hard brick.
_Johnito_ said:
Hello,
The post at this moment just under yours has a part called "Return your phone to unlock and unroot : Step 2 - Relock the bootloader".
Beware and be sure of what you are doing though. With this phone, relocking the bootloader while having any modified system partition (as init_boot for exemple) means a hard brick.
Click to expand...
Click to collapse
Is it safe? What do you mean by modified system partition?