Unlocked 1.1.1 iPhone

Hello,

I was told this is the place where you can generally get a hand with unlocked iPhones, I purchased one about 4-6 months ago and it was unlocked on 1.1.1, I am not sure which method of unlocking was used but I would now like to get it to 1.1.3/1.1.4 depending on which is better but I am not sure how to do it. I foolishly ran ziPhone on it but that has for some reason slightly stuffed my phone up as now the installer does not want to install anything, all the other functions are working fine but I tried to follow an online guide which starts with the installation of oktoprep but now that installer does not work I cannot install oktoprep.

IS ANYBODY able to give me a hand and let me know the best way to update my iPhone to 1.1.3/1.1.4 and keep it fully functional??

Sincerely,

Matt