XT890 is a Motorola smartphone on Medfield platform. I've developer edition with a open bootloader/ Device is bricked as many others and should be reflashed. I've all parts to bring it to live again: ifwi (BIOS), OS DnX (bootloader), OS (kernel with adb enebled). There is the last part to do: fw dnx needs to be changed, but checksum should be recalculated.
How to calculate a fwdnx checksum? Help, please.