Updating psp m33 firmware
If you have OE/M33 firmware equal or greater than 4.01 M33-2 and less than 5.00 M33 please start from Section E. If you have OE/M33 firmware equal or greater than 5.00 M33 and less than 5.00 M33-6, please start from Section F. THIS INSTRUCTABLE SHOULD REALLY BE TITLED HOW TO USE THE RECOVERY FEATURE ON CUSTOM FIRMWARE PSP'S PROPERLY (But I liked my title more) As all disclaimers say. Back up all your data on your memory stick as you will be formatting it. Select the option that reads Run program at PSP/GAME/RECOVERY/EBOOT. If you have OE/M33 firmware equal or greater than 3.52 M33-4 and less than 4.01 M33, please start from Section C. If you have OE/M33 firmware equal or greater than 4.01 M33 and less than 4.01 M33-2, please start from Section D. If you have followed the instructions in my previous post Installing PSP custom firmware 5.00 M33, please start from Section F. Turn on your PSP while holding the right shoulder button to go into recovery mode).
Custom firmwares for the PSP has been since 2006, when Dark_Ale X did a proof-of-concept firmware based on the 1.50 version.
If you come across any problems with this tutorial, I suggest you visit the ur PSP forums and post your query there.
The co-worker i got it from states it hasn’t been turned on in like 6-7 years.
Made the mistake of updating it to 6.61 apparently 6.60 is preferred if im not mistaken.
The Play Station Portable system software is the official firmware for the Play Station Portable.