Freelance AC700F firmware degrade
I need to degrade AC700F firmware to Freelance Version 9.2. Since, you can't degrade the firmware to V9.2 directly (Read from ABB manual Product Bulletin number 3BDD011838D0298), I flashed with freelance version 9.2 SP2at first , which went fine. And then, i tried to flash the controller with version 9.2, but i get the error message" Firmware update Failed, connection to the station could not be established". The engineering station is connected to the controller via an Ethernet switch and i can ping the controller. How could i change the V9.2 firmware to the controller without errors? Are there any steps that i am missing?
One of the paragraph in the manual states "Updating or downgrading of PM 783F CPU firmware directly from version 9.1 to 2013 or reverse is not supported in all cases. PM 783F of Rev. B operating in a 9.1RU1a environment and temporary correction TC09 installed, can be directly updated to version 2013."
Also, does firmware for V9.2 SP2 same as for V9.2?
What is TC09? Is it a software file that you need download ? Never heard of one.
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