We're letting you guys know that PSP homebrew developer Becus25 (aka Dark_Moon) has recently released Antiupdate V3. This homebrew plugin will allow users to hide the PSP's firmware updates when you attempt to load a UMD.

Antiupdate V3 was specifically built to run on PSPs loaded with custom firmware 3.80 M33, and carries source codes and an SDK for other programmers. As Becus25 explained regarding the news SDK:

Now it incorporate a SDK for programmers and the src code of the app. The SDK has one function reversed from 3.80 M33 and with this you’ll can patch 3.80 system calls ,redirect system functions and read if any eboot is SCE Update . Now the app patch $ce updaters from UMD disc.

Given that there's no readme included with this file, we advise the readers to visit the developer's site should they encounter any problems.