.pof file checksum

I have been given a pof file, which I need to submit to a vendor for programming. I need to find out what the check sum is for this pof file.

When I load it into my data io programmer, I get 00000000, which I don't believe. I am running the data io in simulation mode, as I don't have the correct top.

Could someone please look at my file and tell me the checksum, or is there some tool I can use to calculate the checksum?