upgrade 3.71m33-2 to 3.90m33-3?

[BIGD91]

ok, so i recently modded my slim from 3.80 to 3.71 using pandora and mms, anyway i've been having a hard time trying to find out how to upgrade to 3.90.
If anyone knows, could you please tell me what files i need and where to get them?

[Product F(RED)]

There's an updater you can grab from Dark-AleX - PSP Developer . Put that in /PSP/GAME/ . Next, download 390.pbp and also put that in the UPDATE folder which should now be /PSP/GAME/UPDATE/ . Run it from XMB. Tada.

[BIGD91]

thank you so much