UK Orange 3GS Jailbreak after unlock

[ugokj]

Hi
I have a 3GS iOS 4.2.1. I'm thinking about getting the unit unlocked by Orange. Apparently this can be done for a small fee. I was wondering if I do get this done, would the carrier unlock be affected if I decide to update iOS from 4.2.1?

Furthermore, if I decide to jailbreak the network unlocked phone, would this have any negative effects (eg. would I have to get it unlocked again once I have jailbroken it?).

Cheers for any help!

 

[robbieduncan]

The unlock is based on the device ID and is stored on Apples activation servers. The phone remains unlocked across restores and upgrades. No idea about jailbraking though

 

[testcard]

The small fee, in my case, was £20. I told the Orange CS guy that as a long-term and loyal customer I felt that the fee was a tad unreasonable. He agreed to credit my account with £15.