OK, SP2 firmware loaded, confirmed on System Info screen as "Software Version 00.04.03.SP2", Horizontal measurements include the Pulse and Edge counters. Self-cal completed, scope restarted, set to Default setup (Storage>Default) then:
Testing for Freeze Bug:
Turn on all 4 channels (no inputs necessary).
Timebase 1 us/div.
Go to Acquire menu, select Normal and Mem Depth Auto.
Go to Display, select 100 ms Persistence.
Push Horizontal Scale knob to enter Zoom mode.... and scope is FROZEN. Does not respond to any controls.
Restart by cycling power switch. Scope comes up working normally with all 4 channels on and not in zoom mode.
Check Display Persistence = 100 ms, check Acquire Normal and Mem Depth Auto....
Push Horizontal Scale knob to enter Zoom mode... and scope is FROZEN. Does not respond to any controls.
Cycle Power switch... select Storage>Default. Load saved setup file for Trigger error --- using signal from scope's Probe Calibrator-- Trigger error appears to be GONE!
Woohoo!!
Load saved setup file for Trigger Zoom error.... Error appears to be GONE!
Load setup file for Math Error.... using 320kHz square wave from VCO..... math error STILL THERE, see screenshot below.
Executive summary:
Screen display of Software Parameters re Jason's instructions: NO.
Freeze Bug: STILL PRESENT.
Trigger Errors: Fixed.
Math Error: STILL PRESENT.
Grade: D-