I recently had to recover lost data from an iPhone 3G that was never backed up. I created an image of the iPhone (about 8GB). I used Photorec to parse the image and it seems like it did the job.
I have one problem though. The contacts look as though they are in vcard format, but have an extension of .abcdp. I tried to open them in textedit, but had no luck. Just a bunch of gibberish when opened. Please help!! Thanks!
Tutorial (method 1) I used: