News for hackers. Stuff that matters.
Re:Apple’s iOS 4.2 Available Today for iPad, iPhone & iPod t... by kazuya on Monday November 22, 2010 @02:24PM (#1930953)
Read the fine print:

  * Create a free Find My iPhone account on any iPhone 4, iPad, or iPod touch
   (4th generation) running iOS 4.2. Once you create an account on a
   qualifying device, use your Apple ID and password to enable Find My iPhone
   on your other devices running iOS 4.2. Find My iPhone is not available in
   all countries.
So you can use iPhone 4 to activate the feature on 3GS, though I have not tried yet.
Re:Apple’s iOS 4.2 Available Today for iPad, iPhone & iPod t... by sirn on Monday November 22, 2010 @06:49PM (#1931767)
I activated Find My iPhone with iPad and it works on my 3GS.