Ultra FlashPass is a DS flash card. It appears to be internally identical to Ninjapass DS Flash, so look at that entry for more details.
The official Ultra FlashPass site cannot be linked from PHWiki because they provide links to commercial roms and sell CD-R with commercials roms on their site. 
This card has been tested by a user and it has been confirmed that this card supports all versions of Firmware. Also, It has 100% compatibility with ALL 1100+ Commercial and Demo ROMS dumped and can support all save types.