OK, a while ago, I was examining my PS3's flash to try and find out how the PS3 checks you firmware before your sign in to PSN. Now I think I've found the way, but if it were to work then it might be able to control how much information is actually sent on sign in. (Console ID, UserID, Password (although obviously user and pass still need to be sent!)
Now comes the issue...
I was looking through /dev_flash/vsh/resource/ and found npsiging_plugin.rco. After opening it, I found a tag that read:
<Text name="msg_update_need_update_update_ask">A system software update is required.
Do you want to update now?</Text>
So, I wondered where it checks for the variable "msg_update_need_update_update_ask" and found it's sister file in /dev_flash/vsh/module/. It is called npsignin_plugin.sprx. It is not a usual sprx file, so the usual sprx and self decryption tools will not work.
I am looking for anyone who thinks that they stand a chance and decrypting this file to please attempt to do so. If it is hacked and edited, then I believe that we could spoof anything we damn well want on PSN... (Different PSNs/Console ID/FIRMWARE VERSION!)
Please comment with any ideas/feedback/progress...