Easiest solution LionsFan..........
I hit every one of these types of post with -rep and send a report about it.
If enough others do the same, it will help cut down the clutter.
For the op:
You should be able to expand the image file (if it is not already) and either ftp it over to the proper folder in the PS3 or put it on an external drive and plug that into he PS3.
This is assuming you are on CFW of some kind. If you are still on OFW, you are unable to do this. If you are on 3.60 OFW........well.........don't really know what to tell you other than it could be quite a while before you are able to run backups.
If you are asking about burning a blu-ray disk, dvd, cd, etc......, not happening yet (don't know if it ever will happen).
I would much rather go to my grave not needing my gun, than go there wishing I had it.