661.pbp Download [exclusive] Now

While the filename looks cryptic—just a set of numbers and an extension—this small file is the key to unlocking the full potential of Sony’s iconic handheld console.

In the lifespan of the PSP, version 6.61 was the final official firmware update released by Sony (released in January 2014). Because it was the last update, it became the standard "base" for the modding community. Most modern custom firmware (CFW) solutions, such as the popular permanent patch, are designed to run on top of firmware 6.61. 661.pbp Download