I found a solution: redownloading Harmattan PR1.3 fiasco image from known source, comparing checksum with known value and cold flash with flasher Code: $ md5sum harmattan.fiasco |grep 53fcefc0033875661c19160e16999b3e 53fcefc0033875661c19160e16999b3e harmattan.fiasco $ sudo flasher -c -f -F harmattan.fiasco -F emmc.bin -R
$ md5sum harmattan.fiasco |grep 53fcefc0033875661c19160e16999b3e 53fcefc0033875661c19160e16999b3e harmattan.fiasco $ sudo flasher -c -f -F harmattan.fiasco -F emmc.bin -R