Does "Erase All Content and Settings" change Firmware?

[jman995x]

I'm selling my wife's iPhone and the person might be interested in keeping the current firmware (4.3.2) for JB reasons.

If I "Erase All Content and Settings", will the new owner have to upgrade to 5.0.1 firmware when they get it (since this phone is new to them and their computer, thus they won't have a previous Restore on their computer)?

My gut says, "No", that the firmware stays on the iPhone even after an EACaS.

Please let me know a.s.a.p. as I want to ship this out to the buyer today.

Thanks,

J.

 

[soco]

It does not.

 

[jman995x]

It does not.

Thank you.

 

[Crystal-RX]

You can do this if your phone is not jailbroken. Don't ever do this if your phone is jailbroken because if you do, it will hang and you will have to restore it.

 

[aa521490]

I have the iPhone 4S with firmware 5.0.1. If I reset and do ERASE ALL CONTENT & SETTINGS, will I lose the 5.0.1 firmware? Want to give a business my iPhone and have them jailbreak and unlock it, but dont want them to have access to my info and apps.

 

[Applejuiced]

I have the iPhone 4S with firmware 5.0.1. If I reset and do ERASE ALL CONTENT & SETTINGS, will I lose the 5.0.1 firmware? Want to give a business my iPhone and have them jailbreak and unlock it, but dont want them to have access to my info and apps.

Like CRX said above as long as you iphone is on stock firmware and not JB you can do an "erase all" and still stay on the firmware that you're on now.
If the phone is JB and you try an erase all it will get stuck at the Apple logo and you will need to do a restore to bring it back. And by doing a restore you will be forced to restore to the latest firmware version out.

 

[aa521490]

Thanks. Wanted a second opinion. Also, I wasn't sure which iPhone the OP was talking about.

Just to clarify, if I do a backup on my macbook in iTunes, erase all contents and settings, hand over my iPhone 4S to be jailbroken and unlocked, then get it back and restore from backup, will the JB and unlock still be on my iPhone? Will all my apps be where it should be on my screen and have all the info intact (eg. game settings, 1 password info, music, movies, etc..)?