1. Download and install PSNPatch 4.66.33 if you don't have it already.
2. Run it if you haven't already.
4. Navigate to /dev_hdd0/game/BLJS10018/USRDIR/psnpatch.cfg and put it on your desktop. You can use ftp or a flash drive, just as long as it gets to your desktop.
5. Open it up with Notepad
6. Find this "menucobra_spoof_version=0466" and change the "0466" with "0470."
7. Save it and put it on the root of your flash drive.
8. Put flash drive in your ps3 and load up PSNPatch.
9. Press Select>Start>triangle>X It will reboot your ps3.
10. BOOM! You can now sign in as long as you're not banned
NOTES: 1. This ONLY works on 4.66 HABIB Cobra. If I am wrong, correct me.
2. Disabling WebMan may help with any problem.
Hope this helps!
PSN Patch 4.66.33 Download:
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Proof that this works: