Downgrading PSP 4.05 – What is it?

Most of the people are unheard of the term “downgrading PSP 4.05”. First of all, you should know what a PSP is. PSP (Play Station Portable) is a hand-held game console manufactured and marketed by Sony Computer Entertainment. PSP uses an optical disc format known as UMD (Universal Media Disc), as its primary storage medium. Its other striking futures are; large LCD screen, powerful multi-media capabilities, and connectivity with the PS-3, other PSPs, and the internet.

Now there are many versions of PSP. When you say downgrading a PSP means setting back that PSP firmware to an earlier version, i.e. PSP 1.50. We will discuss on how to downgrade PSP 4.05 in this blog.