Firmware 2.0F and DRX 500ULX

I have DRX 500ULX (recently bought from bestbuy). I guess it’s a latest model. I installed 2.0F firmware (maybe I didn’t read the sony instruction carefully, it appears that only older model 500A needs it)

  • Should I have upgraded with firmware 2.0F ?
  • Does it degrade the performance. Is there a way to safely uninstall it.
    Thanks in advance for your advices

It is meant for your drive too and shouldn’t cause any problems.

Does the external enclosure have a fan on the back? Can’t find any info on it.