How many baseband for iPhone 4?

[hasan044]

Hi

A simple question.
How many baseband available for iphone 4.

And what will be the baseband if I update my iphone 4 to iOS 4.3 without tiny umbrella?

thanks in advance

[edoutmax]

here's a quick reference site

iOS version history - Wikipedia, the free encyclopedia

[hasan044]

Thanks for the link. It's indeed a details!