Owners of PSPs with a v2.xx (basically higher than v2.0) can now thanks to the Adventure Maker Software create HTML Based games for the PSPs with firmware that normal homebrew isnt working on as of yet.

Well gotmilk0112 has posted some games he has made for the PSP using the software above, check 2 of them out here -> http://www.dcemu.co.uk/vbulletin/showthread.php?t=16476 and more here --> http://www.dcemu.co.uk/vbulletin/showthread.php?t=16492

It may not be real homebrew but for v2.5 / v2.6 and v2.01 users its something