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BIOS E14 Gen 2 (type 20T6, 20T7) Laptop (ThinkPad) - Type 20T6 r1auj40w GE420 GE520 NM-C771 REV1.0 AMD.bin

HI, i have this lenovo need unluck... i can read ite chip... I use vertyanov 4....
but i try write other codes but dont can erase old code,,
has anyone got this problem?
it's like the ite only accepts the original code..
I have already tried other codes, the vertyanov 4 can write, but when I analyze it, the code is the same as the original
 
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