I followed the downgrade guide on the forums here (http://forums.qj.net/f-guides-hacks-...ide-90919.html)
and didnt follow directions and ran the generic HEND files on my PSP before I upgraded to FW 2.71 (DUH - Yeah that wasnt smart). It seemed to be successful - there was blue screen, and the psp turned off. I turned it back on - everything works fine. Plays games, boots etc.
Anyways, PSP still functions fine, but I could not run the 1.5 downgrade. I realized my mistake and tried to update to 2.71 with the firmware update on here file - "8046_EBOOT.PHP". I put it in a game/update folder and attempt to run it. However, the icon says "corrupted data" and will not allow me to update. Running it just says "Game cannot be started , data corrupted". Did I do something wrong in the installation of the update? Or can I no longer update now that I ran the downgrader thing prematurely?
Any help greatly appreciated!