iPhone 3GS 4.1 needs updating to latest FW that can run Ultrasn0w

[Dannyrobson]

Hi,

I have bought a 3GS on 4.1, I've unlocked the phone with Ultrasn0w & need to
Update the FW to use certain apps. If I just update to the latest through iTunes it would muck my unlock up

Any help would be appreciated !!

Also I updated the baseband to the iPad baseband, could I revert it back or is it stuck forever?

 

[willerz2]

Which bootrom is on the 3GS.

 

[Dannyrobson]

Which bootrom is on the 3GS.

It's the newer one 44th week