Mitsubishi TG 2000A software

I use TG2000A software to control around 350 mitz indoor units. I rebooted the pc today to do a windows update - and now the TG2000 is displaying the temperatures in F instead of C.

I've had a look through the system - but cant see any option to change it ? Tech help don't support TG2000 anymore and couldn't help :(

strange thig is - when I connect to the GB50's online - they show temp in c.

Any ideas?

I don't know this software so have only been reading what I can find.

The TG2000 manual states that the °C/°F is set by the AG-150A/G-50A devices.

Were any initialising files lost during the Windows update?

Came across this site with lots of Mitsi docs which may be useful...

http://bit.ly/2srhfMX