Comparison of setup menu figures/values in RNS510

Chaps

Have now gained access to my setup menu and would be interested in some comparison figures, and perhaps information on what things mean:

Under version info my delivery p[art number is 1T0035680C - I assume this means I have a C head unit?

HW-version - H06? mean anything

Running firmware 2680

Under my HDD status, the second option is tempStatus, which classifies mine as 'degraded' - is this a concern

Under the menu System:

What do the options reset counter, memory check and clear error memory mean? Intrigued....

Thanks

Andy