one of my best friends updated to 9.00,
@Hayato213 , when it was the latest in order to transfer his games to the ps5. there had been lots of rumors like that about it bricking or causing systems to become unstable just like you've heard with 9.60. he had no issues. the only reason he updated afaik was that he was going to sell the system, and he wanted his games. I think those rumors are probably unfounded. I'm sure sony tests their firmwares very thoroughly, because they'd probably be obligated to fix systems that got fucked up by a firmware update.