"Communication error during data transfer" attempting firmware download to AC800M controllers
Getting "Communication error during data transfer" Pop-up error when downloading firmware for AC800M, while reverting from SV5.1 FP4 firmware to an earlier firmware version, i.e. SV5.1 Rev C or SV5.0 SP2 Rev E
Can no longer downgrade the firmware using the Control Builder Path: Tools -> Maintenance -> Show Remote Systems -> Show Firmware Information: If FP4 fimrware is currnetly installed in the controller, will throw a Pop-up error : "Communication error during data transfer" while attempting to download the firmware to an earlier version of firmware
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