Upgrading Old Deactivated iPhone 3G To New System Software?

thehook

macrumors newbie
Original poster
Jul 24, 2010
19
0
Can it be done and/or synced without messing up my sync to my new iPhone 4?

I'd love to keep this old snail around and use it as an iPhone touch but I'd like to install the newest software 4.0.1. Thanks!
 

zizo79

macrumors 6502a
Jun 2, 2009
748
0
QQ Part
Do not upgrade it ! Just keep the old software in it, mine has been really sluggish with a really bad battery life and it has not WIFI.
 

NYY FaN

macrumors 6502
Jun 22, 2009
455
16
New York
I was able to upgrade my old phone just fine, I left my old sim card it in to activate it and it did not effect my iphone 4 at all.