NAS Killer 4.0 - Unable to flash LSI 9201

I built my NAS 4.0 and am looking to expand it with an HBA. I got an LSI 9201-8i off of ebay and cannot figure out how to flash it into IT mode.

Mobo: Intel DQ77MK
CPU: i5 3570K

I followed JDM’s guide on how to flash and keep getting a PAL error when trying to use the sas2flsh commands. I don’t have any older hardware that I could use to flash the card (other computers if it becomes relevant are an HP 290, and a desktop with a z270 mobo and i7-7700k).

Any help is greatly appreciated.