Instructions are below.
First, you need to install CFW or HEN(ex. 5.00M33 , 6.20TN , 6.35PRO) in your PSP.
1. copy UPDATE folder at ms0:/PSP/GAME/.
2. Put 6.37 official update at ms0:/PSP/GAME/UPDATE/637.PBP .
3. Run installer from xmb.
– features –
Hold R trigger and turn on the psp, you can enter recovery menu.
Hold Home button and turn on the psp, you can Boot OFW !!!!!!!
Add OPNSSMP option. Now you can run ISO without decrypt EBOOT.bin ,if ISO’s required FW is lower than 6.37.
You can set this option at “RecoveryMenu -> Advanced -> Advanced Config -> Excute OPNSSMP.bin” .
Prometheus ISO Loader(PIL) seemed not support 6.37 . If you use PIL, need decrypt EBOOT.BIN .
Custom Firmware 6.37 ME-3 Changelog:
v3
– Add iso driver.(“Normal -UMD required-” and “ME driver -NO UMD-”)