iPhone restore

Photo stream only keeps photos from the last 30 days. Older photos are deleted from photo stream but will remain (up to 1000 photos) on your device until deleted (such as by restoring it).

Your backup will included your camera roll photos. If the missing photos were in your camera roll when you last backed up, restoring the backup should recover them.

To keep all your photos, save your photo stream photos to your camera roll (if not already there) by opening your my photo stream album, tap Edit, tap all the photos, tap Share, tap Save to Camera Roll. Then import them to your computer along with your other camera roll photos as explained here: http://support.apple.com/kb/HT4083.

Unfortunately, if they weren't in your camera roll, there is no backup to restore from. Photo stream photos originate from your camera roll so they would normally be there, and as a result, would be included in the backup.

You're welcome. Sorry for the bad news.

One last thought....

If you have been syncing with iTunes, you might want to check to see if you have an older backup on your computer that may contain at least some of these photos while they were still in the camera roll (all photo stream photos were in the camera roll at one time unless added to photo stream from another device). Open iTunes and go to Preferences>Devices and check the Backups list. If you have an older backup that may include some of these photos while they were in the camera roll, you could then create a new iCloud backup to save your data as it is now, then resore the iTunes backup, import the recovered photos to your computer, then restore to your iCloud backup to return the current data to your phone.

There may be. If you don't have a usable backup on your computer to extract the photos from, you could try converting the iPod photo cache files to usable photo files using 3rd party software such as http://www.ithmbconverter.com/en/features/.

I just noticed that this may be a Windows-only program. You may want to contact them to be sure. It may be possible to copy the files to a PC and run the program from there to convert them.