Can I sync my iPhone to a new computer without upgrading to 4.2.1?

[BluePotato]

I have an iPhone 3GS old bootrom (and an iPad) both jailbroken and on 4.0.1.

In Cydia, it shows SHSH blobs are saved for 3.1.3, 4.0, 4.0.1, 4.0,2, 4.1, and 4.2.1+ if that matters.

I was syncing these to a Windows laptop that I sold (no longer in my possession) and now have a new Macbook Air. I would like to start syncing both my iDevices to my new Mac without having to upgrade to 4.2.1. I would like to stay on 4.0.1.

Could somebody out there in the community let me know (1) if this is possible and (2) what steps I could follow to make this happen?

A hearty thanks to you all.

 

[PsstGreek]

Of course you can. When iTunes says there is an update for your iPhone just click "no" and "don't ask me again"

 

[BluePotato]

Of course you can. When iTunes says there is an update for your iPhone just click "no" and "don't ask me again"

Thanks for the reply, Greek.

But to start a new syncing relationship between the iPhone and the Mac, doesn't iTunes require restoring it to factory settings first?

And won't that process update it to the latest 4.2.1 firmware?

 

[-aggie-]

Use Tiny Umbrella.

 

[Myzhi]

Thanks for the reply, Greek.

But to start a new syncing relationship between the iPhone and the Mac, doesn't iTunes require restoring it to factory settings first?

And won't that process update it to the latest 4.2.1 firmware?

No, itunes doesn't restore your phone. ie update firmware and remove your JB/unlock. It just removes your sync stuff, ie music, apps, contacts and so on.