Not just one, two… The first comes from joshd666, while the other comes from bosshunter, who you may recognize from the earlier CFWEnabler iR Shell patch. So try ‘em both and you decide what’s best.

joshd666’s patch:

1. Copy the IRSHELL directory to the root of your memory stick;
2. Copy the irshell2×3x directory to PSP/GAME; That’s it, that’s all.

bosshunter’s patch:

1. Make sure you have:
   • iR Shell 5.0 installed;
   • The plugins loaded by game.txt are disabled;
   • Replaced the IRSHELL folder with the one provided.
2. Run iR Shell.
3. Open Directory View and go to ms0:/IRSHELL/PATCH/5.50/.
4. Run btcnfpatch.prx.
5. Follow the onscreen instructions.
6. Wait a few seconds. You should see a similar screen to the screenshot above upon success.
7. Re-enable your game.txt plugins.
8. Enjoy iR Shell.

I tried both on 5.50 GEN-A, and personally I’m sticking with bosshunter’s method. For some reason or other joshd666 is using iR Shell 3.9.

Download:
iR Shell 5.0
bosshunter’s iR Shell Patch
joshd666’s iR Shell Patch

- source: qj

Released by bosshunter — for all the CFWEnablers out there — a patch facilitating ISO/PSX support as well as improved iR Shell stability. There are a few things you should note first –

1. The full extent of this patch only works on firmware 5.03 with CFWE 3.50 and below. CFWE 3.60 fails loading PSX titles while ISOs continue working just fine. So use accordingly.
2. Use at your own risk; this patch touches a file in flash0 that’s installed by CFWE.
3. If something goes wrong while the PRX patches the necessary files, reinstall CFWE and try again.

What to do?

1. Make sure you have:
   • iR Shell 5.0 installed;
   • A fresh install of CFWE;
   • The plugins loaded by game.txt are disabled;
   • Replaced the IRSHELL folder with the one provided.
2. Run iR Shell.
3. Open Directory View and go to ms0:/IRSHELL/PATCH/5.03/.
4. Run btcnfpatch.prx.
5. Follow the onscreen instructions.
6. Wait a few seconds. You should see the screenshot above if it’s successful.
7. Re-enable your game.txt plugins.

Custom Firmware 5.50 GEN users — expect a patch soon.

Download:
iR Shell 5.0
iR Shell Patch for CFWEnabler
CFWE 3.60 | CFWE 3.50

- source: qj