Hi Nick,
Yes, that is the correct link. If I click on the link in your post I get the HEX file. To save the HEX file you need to right click the link and hit Save As ... and then put the HEX file somewhere locally.

oh I love software ! No matter how much testing gets done there is always something that slips through. I like the -5 position issue with SGP. I did most of the testing with MaxIm DL and set position to zero and up to 150000 to test. Clearly didn't perform the same test with SGP !
Luckily, that's a simple one to catch and fix - negative position
Have you managed to get the HEX file ok now ?
I will fix the issue with the negative position upsetting SGP later today, don't have SGP on my work machine.
Cheers,
Dave