Thanks first of all,
Reinstalled software with WebUpdater and it generated the GUPDATE.GCD file.
Opened it with the patcher, but I get the same error as I got when I was trying to patch for the other GPS (which was not needed in the end).
"Firmware version as specified in GCD file: 8.50 for Unknown device (HWID 1947).
Firmware name: Firmware version 8.50 for Unknown device (HWID 1947).
This firmware does not seem to support BirdsEye Satellite Imagery."
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