I guess mine is old too; SDSSDE50-1T00. The Support page for the disconnect issue lists it as unaffected and no firmware updates available.
It’s getting difficult to trust these companies though. The entire line of Samsung Evo 870 500GB drives I bought at work are failing early, I just passed 11/20 Dead or Dying. Then I bought some Western Digital Blue drives as a replacement that had 65K reviews on Amazon only to find out they might also be lemons. Quality Control has gone to shit.