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./mkimxboot -i sandisk-firmware.sb -b bootloader-fuzeplus.sansa -o firmware.sb -t dualboot
[INFO] mkimxboot models:[INFO] Fuze+: idx=0 rb_model=fuz+ rb_num=72[INFO] mkimxboot mapping:[INFO] md5sum=c3e27620a877dc6b200b97dcb3e0ecc7 -> idx=0[INFO] MD5 sum of the file: E8 24 AB 3B AE E9 9D F6 57 6E 52 E6 F5 B6 EF 7D [ERR] MD5 sum doesn't match any known fileResult: -4
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