Unhappy [Q] can't unlock bootloder after relock bootloder

plz, help me

I have a problem

last night I UB my Z1 compact

I forget backup TA first.

A few minutes before re-locking and ROOT,backup TA

but I can't unlock after relock

I always use Flashtool do....

I first unlock the information is to use another computer

I need to use the same computer?
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