How to recover deleted photos from an iPhone 3G?

There are many programs for the 3GS but I haven't seen any for the 3G

You can't on any iPhones unless you have them in iTunes on your computer. It's not the 3G doing it its the operating system.

You should restore all iPhone files from iTunes backup. There's professional software that can extract iPhone backup files from iTunes to computer. This software can also detect if there's a backup files on your iTunes or not. So you can try to recover deleted photos in this way. You can get the software from
http://www.iphonebackuprestore.com/

If a file is deleted and is not written by further data, then the file has actually been there.
Check out any-data-recovery.com/recover-photo.htm and get your photos back!

No, not possible with iPhone

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