iPhone 3GS 3.1.2

[danielxute]

I bought an iphone from an old guy that never updated it. Lol. It's for my dad that has t-mobile so i need to unlock it. I unlocked with blackra1n 🙂eek🙂 but its really slow and i want to get it on 4.3.3. Is that possible? Thanks 😎

 

[danielxute]

Anyone?

 

[sfjava]

Anyone?

You could upgrade your old 3gs phone to IOS 5 as long as it has an old bootrom. Check out this thread for details:
https://forums.macrumors.com/threads/1256528/