10-16-2014, 05:03 PM
sorry I thought you had ETH03. There is a known problem with upgrading with UCM/ETH03
In that case you should be able to use the UCM/ETH02 with the firmware programming cable to upgrade the Comfort and UCM/Cbus
Start with Comfort. see instructions in http://www.comfortforums.com/forum4/1216.html
Dont forget to shunt PP2 on Comfort
Next UCM/CBUS
See instructions at http://www.comfortforums.com/forum4/1782.html
when you upgrade UCM, dont connect the 4 way white cable. Just connect the programing cable from UCM/ETH to the other UCM
In that case you should be able to use the UCM/ETH02 with the firmware programming cable to upgrade the Comfort and UCM/Cbus
Start with Comfort. see instructions in http://www.comfortforums.com/forum4/1216.html
Dont forget to shunt PP2 on Comfort
Next UCM/CBUS
See instructions at http://www.comfortforums.com/forum4/1782.html
when you upgrade UCM, dont connect the 4 way white cable. Just connect the programing cable from UCM/ETH to the other UCM

