I can confirm it works, I have an older unit from my son's Ford, that didn't work with the Jaguar. After receiving the message I contacted the seller and they sent me the updated firmware with upgrade instructions.
Now it works fine in the I-Pace!
In case anyone needs the upgrade instructions:
You must update via a USB flash drive.
Make sure to save the new firmware directly to that USB flash drive.
Update instructions:
1. Download the firmware update file to the USB flash drive.
2. Plug the flash drive into the CPLAY2air adapter.
3. Plug CPLAY2air to USB power charger/wall charger for your iPhone. Please don’t use the USB port of the car or of a computer!!!
4. Wait for 2-3 minutes, until the red LED and the blue LED will light up at the same time.
5. Unplug the adapter from the USB charger and remove the USB flash drive from the adapter.
6. Now plug the CPLAY2air into the USB port of the car.
7. Wait until the new window will appear on the vehicle's screen.
8. Connect your phone to the WIFI SSID network which is shown on the screen.
9. Once connected, use the camera app to scan the QR code on the screen or input 192.168.50.2 on your phone browser.
10.Once the software is activated, please click the button "Reboot"
11.Wait for the new interface to appear on the screen.
As I had an older adapter, after the update I just plugged it in the car and it worked.
Link to the file:
U2W_Update.img