[Q] Save TA Partition before unlocking bootloader ?

Hii, I just buy a XZ5P (E6833 Dual), and I would know if there is any way to save the Trim Area before unlocking BL ?
Cause you know Backup TA needs root permission, but to get root permission I need to unlock the bootloader.. :/
Is it possible to save that partition from Flashtool or something else ?
Thanks in advance :)
N_A

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