WINCE not flashing

kripanand
Dear Forum,

When I try to flash a WINCE image to the Mini2440, it fails saying there is
a checksum error.  

Can anyone guide me in the right path as to why this happens.  I had
flashed quite a lot of Mini2440 in the past and it worked, but the new lot
does not.  One difference I have seen is the bootloader version is 1138-2K.

Thanks