[Tutorial] Backup You TA Partition To Keep Your Drm Keys before unlocking

[rickwyatt]

Backup Your TA Partition Before You Unlock Your Bootloader

please read this

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This wont work if you Unlocked your bootloader already because
you have already changed you TA partition. also don't flash
someone elses TA it will hard brick your phone



what i found out

I backed up my TA partition before unlocking my bootloader
after unlocking my bootloader with flash tools and lost my drm keys and ba2
so i thought to myself what would happen if i flashed my locked TA image
i then reflashed it with adb and rebooted my sony z was
locked and drm and ba2 was working again it was like i never unlocked it sweet
​

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heres a video as proof

https://www.youtube.com/watch?v=j7JWa7Y6jUU

Too backup TA do this

(1) Root your phone from here
(2) extract Backup-TA.rar to c:/
(3) click and run Backup-TA
(4) select 1 to backup
(5) Make sure the md5 match
(6) make sure ta.img is in C:\Backup-TA\tools\backup
​

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Too restore TA.img do this


(1) click and run Backup-TA
(2) select 2 to restore
(3) select 3
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please hit the thanks button or donate my tool helped you

Version
we are on v4

 

[lzyllp]

What command you are use to reflash it？

 

[mysterio619]

seriously is this for real??

 

[rickwyatt]

im just redoing it just to make sure

 

[mysterio619]

if it works i'm unlocking my bootloader in no time

 

[Egan]

Also with photos through Album? Can you show screenshots of it when be2 is on and off?

Sent from my C6603 using xda premium

 

[babylonbwoy]

if it was that simple I think that dev would have already did it, plus Sony secure its stuff harder than that.

 

[djselbeck]

You can check in service menu under service tests if DRM Keys are intact.

 

[rickwyatt]

You can check in service menu under service tests if DRM Keys are intact.

if tested two times now and once unlocked and flashed custom boot then restored reflashed ta and ba2 works again

were should i look

 

[gm007]

Maybe you can upload your ta backup,so we can test

Sent from my C6602 using xda premium

 

[Egan]

were should i look

Dial: *#*#7378423#*#*

Service test >> verify certificates

I guess...

Sent from my C6603 using xda premium

 

[rickwyatt]

Dial: *#*#7378423#*#*

Service test >> verify certificates

I guess...

Sent from my C6603 using xda premium

all certificates found

 

[rickwyatt]

it works just tryed again

also once iv flash the TA image i can't flash boot.img anymore

C:\adb>fastboot flash boot C:\Users\Smokey's\Desktop\boot.img
sending 'boot' (11890 KB)...
OKAY [ 0.748s]
writing 'boot'...
FAILED (remote: Command not allowed)
finished. total time: 0.753s


and flash tool asks for the unlock key again

 

[djselbeck]

I don't have stock rom installed at the moment but I know there are 2 Tests one is for Certificates and one for drm keys.

 

[rickwyatt]

iv got 4 Certificates

 

[rickwyatt]

here a screen shot as you can see its working

 

[gm007]

Do you want share the backup?

Sent from my C6602 using xda premium

 

[Egan]

Do you want share the backup?

Sent from my C6602 using xda premium

Here is mine: Mod Edit

Sent from my C6603 using xda premium

 

[rickwyatt]

Here is mine:



Sent from my C6603 using xda premium

you should not share it as its for your phone only

 

[gm007]

i hope no one tried this cause i hard bricked my phone.