Launch day 3GS + iOS 4.2

[Inconsequential]

How do I check my 3GS (being a launch day model!) can be upgraded to iOS 4.2 without loosing the untethered restart ability?

Is there a baseband or something that can tell?

My Modem firmware (baseband?) is 05.14.02.

Cheers

Edit: If mines an effected model then I'll stick with 4.1.

 

[Intell]

If you are sure you have a launch day 3Gs, then you have the old bootrom. Old bootrom 3Gs iPhones are untethered and will always be untethered.

 

[Inconsequential]

If you are sure you have a launch day 3Gs, then you have the old bootrom. Old bootrom 3Gs iPhones are untethered and will always be untethered.

100% sure.

f0recast also says my 3GS is untethered so thats good

Now I will have to go and find out how to upgrade!

 

[PsstGreek]

How do I check my 3GS (being a launch day model!) can be upgraded to iOS 4.2 without loosing the untethered restart ability?

Is there a baseband or something that can tell?

My Modem firmware (baseband?) is 05.14.02.

Cheers

Edit: If mines an effected model then I'll stick with 4.1.

You check by looking at the serial number. The 4th and 5th digits tell you what week it was made. The 3rd tells you the year. Since you bought the 3GS on launch day you most likely have the old bootroom (Model MB) iPhone 3GS.

 

[Intell]

Since you bought the 3GS on launch day you most likely have the old bootroom (Model MB) iPhone 3GS.

You do know that the MB/MC model has nothing to do with old/new bootrom right? People on here have tried in vain to find out what the difference is, we have yet to find it.

 

[S.B.G]

Wirelessly posted (iPhone 3GS: Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420+ (KHTML, like Gecko) Version/3.0 Mobile/8B117)

What does it mean to be untethered? My third digit is 9 (2009) and fourth and fifth digits are 21. I bought my 3GS on launch day.

 

[Intell]

It means, that with the current 4.2.x jailbreak you can restart your iPhone without the help of a computer. A tethered jailbreak you must use a computer to rejailbreak your iDevice everytime you restart.

 

[Inconsequential]

Im hoping someone here can clear up my confusion:

Cydia has been updated to iOS 4.2, correct?
Which way of upgrading my 4.1 to 4.2 is the easiest?

I used greenpoision on 4.1, and I assume I need to use a method that includes the updated cydia?

It's not that important for me to upgrade now, it's just I have some time available so I can do it now!

Any opinions on my way forward? (Or standing still, the case may be )

 

[nebo1ss]

There is a guaranteed way to check Old bootrom vs New Bootrom.
See attached link for a windows method and a MAC method and avoid the mombo jumbo methods.

http://www.redmondpie.com/how-to-check-iphone-3gs-bootrom-iboot-version/

 

[Inconsequential]

For anybody in my situation.

redsn0w b5 worked perfectly