iPhone update from 4.0 -> 4.3?

[vavewave]

So I haven't updated my iPhone since it was released because I feared something would happen due to it being jailbroken. Now, some of the apps I want require iOS 4.2, so I'm wondering if anything would happen if I just updated my iPhone to 4.3 then jailbreak it again, or would I need to do something more complicated like unjailbreak it, update, then rejailbreak etc.

Thanks.

[J03Y4G]

When you update you'll lose the jailbreak and you'll also be forced to use iOS 5.1.1 unless it's a 3G which is 4.2.1.

iOS 5.1.1 is a tethered jailbreak ATM