ION 8500v280 downgrade fails

Issue:

ION8500 firmware downgrade fails

Product Line:

ION8500

Environment:

Firmware update

Cause:

If an ION8500 has firmware version v280, it means that it is a RevB meter. This meter has be repaired with parts an ION 8600, which is why it has the unique "RevB" firmware.
All attempts to downgrade this meter to versions lower than v280 (using ION Enterprise or ION Setup) will fail.