Download EFI_Unpacker http://www.rom.by/files/EFI_unpacker_0_10a.zip Run EFI_unpacker.exe GC1087.bio Take file-AFCCAA0E-E825-441E-A353-157F1E9D8289.free-00.fd Make BIN many

Download EFI_Unpacker
rom.by/files/EFI_unpacker_0_10a.zip


Run
EFI_unpacker.exe GC1087.bio
Take
file-AFCCAA0E-E825-441E-A353-157F1E9D8289.free-00.fd
Make BIN
many FFs + file-AFCCAA0E-E825-441E-A353-157F1E9D8289.free-00.fd at end (total file size == size of flash chip).
Flash this BIN.
Run MB in recovery mode and let it try to flash GC1087.bio .