I have never heard of anybody trying it with success.
I think that the system resets if the internal battery is removed... and the unique system ID is wiped.
I might be mistake here, but I had read that the internal battery is not a serviceable item because of this.
Originally posted by shadymathers
I thought that too,but what if the PS3's internal battery was removed prior to playing a game or has that been tried without success?
---------- Post added at 12:38 PM ---------- Previous post was at 12:36 PM ----------
Probably a bug...
Trophies are recorded in system... so the second they pop the users PS3 records the time and date when it happened.
The of course the trophies are loaded to the server side as soon as the user syncs his system.
Originally posted by LifeOutside
I've seen some profiles on psnprofiles.com with trophies without timestamps, not sure if this is a bug of the site or what you're looking for... but I don't know how to do it :|