Thanks to those who pointed out the filesize error..
I mean I DID see that, but thought the filesize was due to some shite happening with the chip.
I didn't realize the size was in reference to the bios.bin bytesize itself, as the wording "Cerbiod UDMA5 512kb" led me to believe it was in reference to the hard drive cluster size.
Well some good outcome. I was able to flash the chip with EvoX , NOT with XBlast though.
Now it boots in Cerbios and I need to find a way to install the dashboards