Yes, anim8or, as far as I know that's correct. You do NOT want the 1.1.3 baseband on your phone if you aren't not an AT&T, O2, Orange, blah blah etc customer at least until you can unlock using that (maybe never, who knows). If you're an AT&T customer then you're perfectly fine upgrading to the 1.1.3 baseband and its probably preferable unless you have some plans to switch off the network in the foreseeable future. Just don't upgrade to 1.1.3 the legit iTunes method on a 4.6 bootloader iPhone or you're basically screwed until its unlocked with the new baseband.
Thank you.
I am an O2 payandgo user with a jailbroken 1.1.2 ootb iPhone.
Can i upgrade to 1.1.3 and still use the phone functions once iv jailbroken it from that point (downgrade then upgrade and jailbreak etc)?