PSP Firmware 3.73: Why It's Unhackable and What Your Options Are

Firmware 3.73 is the "final boss" of PSP hacking—Sony patched every known kernel exploit. No public CFW, no homebrew, no ISOs, no custom themes. If you're on 3.73, you're locked to official content only.

Why 3.73 Is Different

• Released October 2010, after the PSP Go launch.
• Patched the "PSP-3000/Go" exploit chain used by 6.20/6.35/6.39 PRO/ME.
• No user-mode or kernel exploit has been released since. The scene moved to 6.60/6.61.

Your Options

1. Stay on 3.73, buy legit: PS Store (still works), UMD games, PS1 Classics, minis. Themes from store only.
2. Update to 6.61 (recommended): If your model supports it, update via Network Update, then install 6.61 PRO-C2 or ME/LME CFW. Check your motherboard first!
   • PSP-1000: All models OK.
   • PSP-2000: TA-088v3 and later = no permanent CFW (only temporary).
   • PSP-3000 / Go / Street: Temporary CFW only (re-hack on cold boot).
3. Buy a PS Vita: Native PSP backward compatibility, easier homebrew (HENkaku/Ensō), better screen, dual sticks.

How to Check Your Motherboard

Settings → System Settings → System Information. Look at "MAC Address" last digits or use wololo.net guide. Or run pspident homebrew (if you can launch it).

Warning

Modding voids warranty (irrelevant now), can brick (rare with modern tools), and disables PSN access on that device. Follow wololo.net or r/PSPHacks guides exactly.