Restoring from 3GS iOS 4.3

[Melodeath]

My iPhone 4S is coming in the mail soon. I have a 3GS running iOS 4.3.3. I don't necessarily want to update it to iOS 5 since the 4S will be here soon and I will just switch to that. When the 4S arrives, will I be able to "restore from backup" or however it works from the 4.3.3 3GS iPhone I currently use, or do I need to upgrade to iOS5 first?

Thanks

 

[Melodeath]

Anyone?

 

[pk7]

You can restore the 3GS's 4.3.3 backup onto the 4S's iOS 5.

Older backups are usually able to be restored to newer iOS versions.

It happened to me - when I got a 3GS from Apple, I restored my old 3G's 4.2.1 backup onto it (it was running 4.3.3) and it worked fine.

You should be alright.

 

[Melodeath]

Thanks. Ugh, still so paranoid! lol

 

[redcroft]

Don't use 3GS backup

I got my 4S today and upgraded from a 3GS. But i used the back up on iTunes and found it only put the version of iOS5 that my 3GS had onto the 4s. i.e. no Siri.

I had to restore the phone and wait for iOS 5 to download again before i could use Siri on my new phone.

Lost my progress in Angry Birds but i'll survive!