Hi
I have CFW 3.95 GEN and installed Project4, but when i boot it says the same error [p4ml.prx]
so i copied the file [EBOOT.PBP] from [Project4] into [/PSP/GAME/BOOT] and booted from it (due to the boot bug in 3.95 i've used [AutoBootFixer v1.0])
after booting into [Project4 installation] i've uninstalled [Project4]
and when i started my PSP (expecting XMB to be loaded) i got a blank screen!
How can i restore the normal XMB?

why not just re-install Project4 and then with the p4ml fix (theme files) Project4 will run and try to uninstall again

I've put [p4ml.prx + theme folder] in [ms0/P4/] then booted to Project4 installation menu, then :
- Uninstalled P4, then booted normally, that gave me the blank screen!
- Reinstalled P4, then booted normally, that gave me the same [p4ml.prx] error!

OK, reinstall Project4 with a complete theme then select in the Project4 installer to just UnPatch the system

I've reinstall Project4 with a complete theme
then UnPatched the system, but when i boot, it shows [p4ih] error.
So i've reinstall it again.
now i'm running P4, but when i start the update of CFW 3.95 GEN [.EBP] it hangs!

ok so now you have P4 working... good... now considering you cant seem to uninstall it, go and get the M33 4.01 and run that

I hope that but, for me P4 doesn't load any [EBOOT.BPB] file.
I've tried 1.5, 3.50, 3.71, 3.80, 3.95 (that i was having), 4.0 and 4.1
but non of them worked also homebrew App!
I've loaded them as [1.5, 3.xx, ...] from P4 but it only restarts the PSP!