Ok, I had also tried the update in the link you provided and received the same error. I am just trying to be able to use a CF card.
For flashing the binary file into a 20-year-anniversary controller, you need the BuddhaFlashTool for this specific controller: File:BFlashTool.lha. Use this tool to write the binary file into the flash of the 20-year anniversary controller with this command line: