Thanks you are a life saversorry my mistake it is the SHA-256 you copy from the site and look for XD
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on your hex editor pick search, goto and enter 040A0 and on that line go across to 0C (the numbers across the top) and highlight everything upto 041A0 (0B) and look at the length it should say 100 and if you copy that into a new hex file and paste it in and save it you will see the size of the bin is 256 bytes which is correct.