If you are referring to the Telematics Control Unit (TCU), then yes, the region can be changed. You will need FORScan and the correct coding for the unit. I am unsure if the cellular service will be supported properly, frequency and carrier, but it is possible. I have no idea who supports this in Australia.
FORScan can be downloaded via the link below and is free. you will need to register for a trial code.
https://forscan.org/download.html
You will need the info in this spreadsheet. Based on the truck originating in Canada, it looks like the coding you will need is 3C. (Based on the original asbuilt info for the vehicle.)
754-01-01 xx** xxxx xxxx
Vehicle Architecture (VA) & TCU Dest Region (TDR) & Optional Configuration State (OCS)
30=VA CGEA 1.3, TDR not configured, OCS configured
31=VA CGEA 1.3, TDR not configured, OCS not configured
32=VA CGEA 1.3, TDR North America, OCS configured
33=VA CGEA 1.3, TDR North America, OCS not configured
34=VA CGEA 1.3, TDR Russia, OCS configured
35=VA CGEA 1.3, TDR Russia, OCS not configured
36=VA CGEA 1.3, TDR China, OCS configured
37=VA CGEA 1.3, TDR China, OCS not configured
38=VA CGEA 1.3, TDR EU, OCS configured
39=VA CGEA 1.3, TDR EU, OCS not configured
3A=VA CGEA 1.3, TDR South America, OCS configured
3B=VA CGEA 1.3, TDR South America, OCS not configured
3C=VA CGEA 1.3, TDR Australia, OCS configured
3D=VA CGEA 1.3, TDR Australia, OCS not configured
TCU As Built Database.xlsx (35.6 KB)
You can obtain the vehicle Asbuilt here by entering your VIN.
https://www.motorcraftservice.com/asbuilt
Save the download file and print the webpage to pdf for the future.
Also, see this:
https://www.ford.com.au/about-ford/newsroom/2020/fordpass-connect-arrives-in-australia/