[TenTec] Orion II won't flash

[Barry N1EU]

Has anybody else ran across this issue or have some informed suggestions?
My logging software communicates fine with my Orion II but the latest
Updater (v4.15) reports communincation failure over the same serial port.
I've tried master reset/ram clear and power cycling without success.  The
exact same serial port (not a USB adapter) will flash my other Orions fine.

Thanks & Happy New Year,
Barry N1EU