Help installing 3.52m33

When I try to run the program on my psp, my psp states that it cannot open the 150.pbp file. Am i doing something wrong, i tried taking out the battery and formatting my memory card but it keeps stating that it cannot open the 150.pbp file. I cuurently have 1.50 on my psp please help me.

[ace]

Did you put a 150.pbp file on your memory stick? Are you sure your even using the right 1.50 upgrade file and are you renaming it 150.PBP? O yea, you can do what you want to, but I would highly suggest not to use the M33 firmwares until they are stable and for sure worth it. Most of the members here use either 3.03OE-C or 3.40OE-A anyways. But yea, do what cha want.

Thank you for your help, I cuurently put 3.03 oe-c on my psp. Is there anywhere that can teach me what this type of firmware do

[ace]

3.03OE-C is the same as all the other custom firmware except it has worse psx emulation. It can run bout any homebrew app or w/e. Basically it's the same as 3.40OE-A or M33, other then the differences that Sony put into the firmwares.