Iphone 3gs unlock and upgrade

[Janealams]

I currently have 3gs on firmware 3.1.2 and I use blackra1n to jailbreak it which i believe is a tethered jailbreak and I have to jailbreak it at every restart.

I'm not really good at iphone unlock and jailbreak. Can anyone please guide me how can I unlock and upgrade my phone. All I want is to be able to use the new operating system which is the 4 series and get rid of this pain to jailbreak at every restart.

[ihappy]

http://modmyi.com/forums/general/737...g-3gs-4-a.html

[iPittsburgh]

Try this but with sn0wbreeze 2.7.3 Jailbreak 4.2.8 On Verizon iPhone 4 Untethered And iOS 4.3.3 On Windows Using Sn0wbreeze 2.7 [Tutorial] | Redmond Pie