Thx for the response. Unfortunaly, I read the 300 series support notice after I upgraded to 5.3.4. (Doh). I confirmed I do have the 300 series (blue indicator light on the rear of the chassis). I will verify previous load tonight. Is the 500 series board upgrade still available, and is that a suggested path until I get to EISY? Or are you suggesting downgrade path may be the better option?
Appreciate the response.