[Jess]

I have used it to extract a dump file from a player with 9.0.50 firmware. It appeared to execute without any problems, a large file was created, and my player is still working. Therefore, the answer is that it should be safe to do so.

However, I had hoped to use the dump file to restore what I thought was an identical dead player. When I tried this, the S1 clone warned that the players were not identical and if I tried to proceed this caused a blue screen crash of my PC. I am unable to check whether the dump file would successfully restore the player it was extracted from, because I do not want to risk damaging a working player!