[Elecraft] Odd error code... "DVR" ?!

[Gil WA5YKK]

To anyone who has had the same experience....

   I'm at yet another standoff point with my K3, latest firmware update, 
everything installed, and just two days ago I got "ERR DVR", so I looked 
it up. Not one such item listed, just a notation that I made myself, and 
I can't recall what I did to correct it.

   One question - when you "upgrade" the firmware, do all your custom 
settings get blown away, requiring a total reset? I'm still playing 
games with the 144 MHz module, trying to figure out how to make it work 
with tone and to access repeaters, then I noted that one PDF file about 
upgrades is different from the original. Perhaps that's why a lot of 
items aren't covered, or even mentioned.

Ideas?

Tnx, 73's
Gil WA5YKK