I thought I'd just share the steps to get this going for anyone having trouble since the links to the modified driver don't work.
These instructions are for installing USB drivers for a G4X ECU on an ARM based Macbook running a Windows Virtual Machine.
Prerequisites:
1. You have installed a Windows VM (I'm using Windows 11 ARM via UTM)
2. You have installed link software
3. You have connected your ECU and it's appearing in device manager as 'other devices'
Installing & Modifying Drivers
1. Download https://ftdichip.com/wp-content/uploads/2022/02/CDM-v2.12.36.4-for-ARM64-Signed-Distributable.zip and extract the folder
2. Inside the extracted folder, open ARM64/Release/FTDIBUS.inf in a text editor
3. Find the section [FtdiHw.NTARM64] and at the bottom, add this line:
%USB\VID_0403&PID_7069.DeviceDesc%=FtdiBus.NT,USB\VID_0403&PID_7069
4. Find the section [strings] and at the bottom, add this line:
USB\VID_0403&PID_7069.DeviceDesc="Link ECU"
Save the file, now we need to disable driver signature enforcement
Follow this guide to do that, it takes about 30 seconds
https://www.thewindowsclub.com/disable-driver-signature-enforcement-windows
Install the drivers by going Device Manager > Link ECU > Update Drivers > Browse > Select the directory the modified file is in
You should get a success message, and at this point the G5 Software should recognise your ECU.
Remember to re-enable signature enforcement, it's pretty important to protect against malware.
Hope this helped some!
