Go to Settings → System Information → should show:
6.61 PRO-C2 (Infinity) or similar.
Many websites tell you to download random files. Here’s why his pack is superior:
When you install this pack, you gain access to features that Sony never intended for the handheld: psp 661 infinity 20 cfw pack by mrmario2011
Before diving into the pack, it’s important to understand the firmware version. Sony officially stopped updating the PSP at version 6.61. In the past, modders would avoid updating their systems, sticking to older firmwares like 6.20 or 6.60 to exploit specific vulnerabilities.
However, the Infinity exploit changed the game. It is a permanent firmware patch that works on 6.61 (the latest official firmware). This means you can have the best official system software features while enjoying full homebrew capabilities. Go to Settings → System Information → should show: 6
Why "Infinity"? The beauty of the Infinity exploit is that it is "permanent." On standard temporary CFW, if you turn your PSP off completely, you have to run the exploit again when you turn it back on. With Infinity, your PSP boots directly into Custom Firmware every time, just like a stock console.
From the bulky PSP-1000 to the sleek PSP Go (and even the Street/E1000), this pack covers them all. It handles the different motherboard revisions automatically — something older guides messed up. Many websites tell you to download random files
| Problem | Solution |
|--------|----------|
| Infinity doesn’t see CFW files | Ensure PRO or LME folders are on root of memory card. |
| Freeze after boot | Hold Home during boot to enter Infinity menu, change CFW selection. |
| Games don’t run | Go to Recovery Menu (press SELECT in XMB) → Advanced → Format flash1 and reset settings. |
| USB not working in CFW | Disable USB charging in Recovery Menu → Configuration. |