50G resets after attempting Erase/Draw function with F'

[Skyblues]

Both of my real 50gs and my emulator have the following version:

2: "Version HP50-C
Revision #2.15"
1: "Copyright HP 2009"

I don't understand why I am getting this error and others are not.
Should I try to update my 50g to ROM 2.15 in HPCALC.ORG anyway?

Both are 50gs relatively new and came with 2.15 already installed.

Jim

p.s.
When I press ON/F4 I get the following info:
Version: 04.02
Build: 0106