Last month, we talked about a simple hack to let you edit videos on your iPhone 2G or 3G the same way the iPhone 3GS does. iPhone OS 3.1 just made this hack obsolete for 3G users as it is now possible to edit videos on the iPhone 3G without hacking the phone.

If you updated your iPhone 3G to the new 3.1 firmware, you should now be able to trim videos and save them in your camera roll. In order to edit a video, you should have someone email you the video and save it to your camera roll first. From there, you can access the video, edit it, and save the changes.

That’s a nice little upgrade for the iPhone 3G. Though I still think it’s scandalous Apple didn’t allow the 3G to get video recording.