Lewishamilton and Stiffmeister have created an application that should simplify the process of upgrading your PSP. It's the 3.90 M33 easy installer, an application that should allow you to upgrade your PSP to firmware type 3.90 M33 with one click.
i don't remember this being hard
You got to be a noob if you cant install this normally. Especially if you're using Network Update from 3.80 M33
First: totally useless anyone can update themselves Especially those on 3.80 m33 already, they just need to push the update button in the XMB on the PSP...
I need help switching my psp slim from official firmware 3.90 to the custom firmware 3.90. Would this program help and if so is their something I have to do first? Sorry I am a noob at this.
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