Originally Posted by Ithian
Here is an excellent tutorial to get your jailbroken iOS4 device's tethering function enabled without installing any Cydia/Rock apps like MyWi 4.0 ($20 New Users / $10 Upgrade) or Tether ($5 USD). A BIG thanks to Diode on the Macrumors forum for helping to spread this information around outside the Xsellize forums, and for helping me sort out an issue I had with this.
Thanks to Wortel at Xsellize this will work for any iPhone 3g/3gs/4 running iOS 4.0.1.
Let me start this article by saying this comes more as a personal warning to a community I am quite fond of, and none of this is taken from any official announcement. This is an article based on my personal experience and conjecture, and nothing more.
As of this writing it has been just over 7 months since the release of the firmware 4.2 update. In this update many anti-homebrew measures were taken. Amongst them: an update
Updated 05-03-2010 at 12:15 AM by Ithian