I was over at eurasia.nu and found a file with this description, however i cannot test as my psp is in pawn right now.
This program is supposed to circumvent the UMD’s firmware check and allow 1.0 and 1.5 users to launch software that require firmware upgrade.
Version: 20050711 Filesize: 27957 bytes
Uploaded on: 2005-07-12 @ 06:34 GMT Downloads: 47
Can someone confirm this as working?