Hi,
i upgraded to the latest Build 23.0.1.A.0.167 and lost root. I have done a TA partition backup on Version EURO-LTE_17.1.A.2.36.
My question is: If i flash a rootable ftf file with flashtool now, how is the TA partition affected? Could i proceed without losing the TA partions DRM information? Or should i restore the TA partition backup afterwards?
My plan is to downgrade via flashtool and a rootable ftf file. Apply root and upgrade to the latest firmware via recovery.
Thx in advance.
Solved. I didn`t know that as long as your bootloader is locked, the TA partition isn't affected.
Related
Hi guys is there a tutorial on how to restore my TA backup, i know you use the backup TA tool but not sure what to do
i have a backup TA zip file, and a TA img file.Do i have to be on stock firmware? rooted?
my bootloader is unlocked and rooted at the moment running eXistenZ 2.0
thanks.
What did you use to backup TA? I would hope that tool would allow you to restore it. If not you can restore it using flashtool, the option is under advanced >restore trim if memory serves me.
i used the TA backup tool, do i need bootloader locked or unlocked to restore TA backup?
think i need to be on stock rom but rooted???
help anyone, thanks.
Done it, flashed stock rom, rooted stock, used Ta backup tool to restore TA file, sorted...
Sent from my D6503
Does downgrading to 4.4.2 (and unbranding) will wipe TA partition (DRM)?
And I need do unlock my bootloader to downgrade firmware with flashtool?
andorid1 said:
Does downgrading to 4.4.2 (and unbranding) will wipe TA partition (DRM)?
And I need do unlock my bootloader to downgrade firmware with flashtool?
Click to expand...
Click to collapse
Unlocking your bootloader wipes your TA permanently
Not required to flash a new firmware using flashtool
I have some questions regarding flashing new firmwares on the phone.
Currently I have firmware version 23.0.1.A.0.167, if I downgrade to 17.1.A.2.69 firmware using Flashtool, do I exclude the TA partition from being flashed? If I don't exclude the TA partition while downgrading will it wipe my DRM keys?
If I install custom recovery, will I still be able to receive OTA updates or updates via PC Companion? If I do receive them will they install successfully?
If I downgrade, root, install custom recovery and flash back to the 4.4.4 firmware, when 5.0x firmware is released, will I be able to install that without losing my data and root? Or will I be able to keep both?
The general steps to gaining root on the Z2 now with .167 firmware is to downgrade to .69 (exclude TA partition), run towelroot/easy root, install custom recovery, flash pre-rooted .167 (exclude TA again). Will I have to repeat them for 5.0 update? Does root persist between firmware updates?
If anyone can confirm my thoughts it would be great. Thank you guys!
chaose said:
I have some questions regarding flashing new firmwares on the phone.
Currently I have firmware version 23.0.1.A.0.167, if I downgrade to 17.1.A.2.69 firmware using Flashtool, do I exclude the TA partition from being flashed? If I don't exclude the TA partition while downgrading will it wipe my DRM keys?
If I install custom recovery, will I still be able to receive OTA updates or updates via PC Companion? If I do receive them will they install successfully?
If I downgrade, root, install custom recovery and flash back to the 4.4.4 firmware, when 5.0x firmware is released, will I be able to install that without losing my data and root? Or will I be able to keep both?
The general steps to gaining root on the Z2 now with .167 firmware is to downgrade to .69 (exclude TA partition), run towelroot/easy root, install custom recovery, flash pre-rooted .167 (exclude TA again). Will I have to repeat them for 5.0 update? Does root persist between firmware updates?
If anyone can confirm my thoughts it would be great. Thank you guys!
Click to expand...
Click to collapse
flashing TA with a FTF doesnt wipe your DRM keys
recovery i dont know if OTA verifies the fotakernel partition
it will fail anyways if you have a custom kernel or modified system
you cant update if your bootloader is unlocked but relocked you can for some reason regardless of if you restored your TA backup
you wont be able to upgrade without losing root because after upgrading you will have to reroot
downgrade to 314 or before, root, backup your DRM keys, do what you want
you dont have to keep updating your drm keys because they never change
got it. thanks !!
For downgrading to 4.4.2, is it possible to do it without an wipe of the apps and data?
Which partitions should I exclude when downgrading to 4.4.2?
Envious_Data said:
you wont be able to upgrade without losing root because after upgrading you will have to reroot
Click to expand...
Click to collapse
That really depends on how you want to upgrade, right?
The magical thing about the z2 is we'll always have root. once lollipop comes out we would just need to create a rooted flashable zip and flash in recovery.
o0 Matt 0o said:
That really depends on how you want to upgrade, right?
The magical thing about the z2 is we'll always have root. once lollipop comes out we would just need to create a rooted flashable zip and flash in recovery.
Click to expand...
Click to collapse
Yup
Im going to have my phone rooted nearly imediately after lolipop comes anyway
So, I had my bootloader unlocked back when I was in kitkat (unsure whether I had version 4.4.2 or 4.4.4), but I had backed up my ta partition in case I wanted to relock the bootloader.
Fast forward to today, I am on lollipop (version 5.1.1) and I want to relock my bootloader. Note that I am on stock kernel.
Obviously enough, I have to restore my ta backup.
But I have some questions.
1)Do I have to downgrade to the android version the phone had when I took the ta backup, or I can simply flash the ta backup on my current android version?
2)During this procedure, does anything (such as data) get wiped?
3) Will I lose recovery during this procedure?
Mokiwipeout said:
So, I had my bootloader unlocked back when I was in kitkat (unsure whether I had version 4.4.2 or 4.4.4), but I had backed up my ta partition in case I wanted to relock the bootloader.
Fast forward to today, I am on lollipop (version 5.1.1) and I want to relock my bootloader. Note that I am on stock kernel.
Obviously enough, I have to restore my ta backup.
But I have some questions.
1)Do I have to downgrade to the android version the phone had when I took the ta backup, or I can simply flash the ta backup on my current android version?
2)During this procedure, does anything (such as data) get wiped?
3) Will I lose recovery during this procedure?
Click to expand...
Click to collapse
1. no
2. shouldent be
3. if you are using recovery for locked bootloader then no
A few days ago this was released: Universal TA partition backup
This means that we can retrieve the TA partition with a LOCKED bootloader!
In theory, then we can save the TA partition, root the M4 after UNLOCKING the bootloader, and then relock it by flashing the TA partition back.
If you were wondering about DM-verity, the M4 doesn't enforce that.
Someone confirm this?
Is no one seriously going to try this out? Fine I'll try it in my own time...
I tried it last week and it doesn't work, the backup file was 0bytes. Anyway you can make a TA backup using TA backup master with downgrading to Lollipop, root using the known exploit and then unlock the bootloader.
To root on MM you have to flash boot image, which requires unlocked BL and re-locking after that will result a boot-loop.
Check out the new version. It works now. TA Dumped ^^
The main problem is still there, flashing SuperSU from twrp doesn't work, so no way for re-locking the BL with root after that.