I'm not sure where to post this, I think this is the most appropriat area, so here go's. I currently have a jailbroken iPhone running 1.1.2 firmware. I bought it already jailbroken off of ebay. I have never used it on a phone provider because i'm unsure of all the sim solutions out there. If I do the 1.1.3 thing will I be able to use the phone without having to use a sim solution gadget? Someone please point me to THE correct forum for upgrading the firmware.
Thanks.

You don't need a *Sim solution anymore for 1.1.2 or 1.1.3 OTB phones with Bootloader 4.6.

Just use iPlus sticky thread.