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How to root on an unlocked bootloader?

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slonn
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Default How to root on an unlocked bootloader?

My Xperia Z1 has an unlocked bootloader and the TA partition was backed up prior to the unlock. I'm now looking to sell the phone and want to restore the TA and relock the bootloader. I've flashed the phone with build number 14.2.A.1.136 and the stock rom isn't rooted. How can I root the phone and thereby restore the TA backup/relock the bootloader?
 
blueether
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I would install recovery, then flash SuperSu update, Restore TA and lock BL This may will leave you with a non booting Z1, I would then reflash the FTF

I have never done this (and only have the ZU) so it is untested. If there is a better way please say so.
Charles
Alcatel One Touch "easy" -> Nokia 1110i -> Alcatel ame-408 -> Motorola Razr v3 -> Huawei u8100 -> Sony Xperia Z-Ultra

ROM:- Carbon
Kernel:- Pimped Kernel
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