I’m following the install instructions:
I managed to update the stock firmware.
I unlocked the OEM in dev settings.
I can connect via adb to run the command “adb reboot bootloader” and it reboots to download mode (is this right?)
I’m now meant to flash the recovery with heimdall, but I first have to install the driver via zadig but it doesn’t seem like my device is recognised, and my phone is showing up as the second ‘Gadget Serial’
Any thoughts on how I can proceed?
Use Linux maybe ?! No issues with any phone drivers for me… I recommend Zorin (Linux) as it looks a lot like Windows…
Good luck anyway!
Thanks, I managed it via linux very easily, after wasting so many hours trying to get it to work on windows 
I’m glad I could help you. What Linux version did you use?
I hope you’ll keep using Linux as it is better in (almost) every way than Windows.
I had an old live USB of Linux Mint 20.2
I do love to use linux but I’m somewhat tied to windows for my .NET work, plus game compatibility.