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Schematics A2141 820-01700 X970

sir,this macbook client give for change only serial no , but accidently firmwere erased without backup. after i write with firmwere from vinafix. now can not erase or restore . How i fix it ?
 

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a2141 emc 3347.bin
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You need buy service unlock
uefi 90$
bypasss 150$

Depending on your device, there are only one or both of these keys.
note unlock online not need open motherboard. just connect macbook lock with a macbook work normally
hellow, please price activation unlock, is macbook pro A2141 cor i7 thanks
 
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