How to update iphone 3gs ios 4.1 to ios 5.1.1 and jailbreak it?

M using iphone 3gs with ios 4.1. I know that the unthethrd jailbreak of ios 6 is nt available yet… Please advise me how to update from jailbreaked ios 4.1 to ios 5.1.1… Please it wud help me a lot.

The 3g models can't be updated to the IOS6 Software because the phone will not support it… So don't risk messing up your phone jailbreaking it for something your phone won't support jailbroke or not…

Search it on YouTube, u ll find lots of video tutorials there

Gaurav this side i would like you to tell unthethred jailbreak will be available soon for 3gs model.
For now you can simply download iOS 5.1.1 or 5.0.1 and shift+restore your iphone via itunes and then download latest version of redsn0w and run redsn0w as adiminstrator and check is your device a old or new boot rom if its a new one you need to first go to extra in main menu of redsnow after that click on ' select ipsw' and choose the iOS you have restored with and go back to main menu and click on jailbreak and put your iphone in dfu mode and after redsn0w recoganize your device it will show you like 'creating keneral and something like that, after that redsn0w will ask you to do you want to install cydia, ipad bb, boot logo and some others, simply click on install cyia and proceed after that you don't need to do anything. It will take arount 10-15min and you will be jailbroken on iOS 5.1.1 or iOS 5.0.1