Please use https://github.com/ps2homebrew/kelftool/ instead!
KELFTool DNASLoad fork
Special Thanks to @krHACKen for sharing the DNASLoad user header.
This KELFTool fork adds a new 'dnasload' encryption mode.
This mode creates a KELF with FMCB Kbit field and DNASLoad user header.
those KELFs can decrypt properly on both PS2 and PSX (according to krHACKen, this happens because the DNASLoad user header is whitelisted on PSX Mechacon, allowing it to decrypt on both PSX and PS2 even if the KELF is flagged as a PS2 KELF)
This KELFTool fork is shared here because it will be extremely helpfull for enyone that wants to replace the stock KELF Files provided on KELFBinder 2