elfisic0 - February 6, 2013 at 1:11pm
Jailbreaking will never upgrade your baseband, upgrading your iOS will, so you need to be careful with that. You can prevent a baseband upgrade by cooking an IPSW file which you can make trough Redsn0w or sn0wbreeze, but unfortunately iOS 6.1 it still just coming out and by this time you can only cook that IPSW file with Sn0wbreeze (2.9.8) which currently only supports Windows, but I'm sure that Redsn0w will upgrade shortly to support iOS 6.1