- Download Harmattan FIASCO image using [NaviFirm+] (in wine on Linux you can use [NaviFirmEx]), only one file, filename looks like DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_001-OEM1-958_ARM.bin (for N950 you should extract img.bin from [here]) - Check checksums of images. DFL61[..].bin image crc32 can be found in .vpl file, in NaviFirm images list. zImage md5 at the bottom of instruction.