Hi Iluna
Thank you very much for your advice but I have just managed to revert to version 3 of the firmware via SSH using the method here [ Tutorial ][ SSH Method ] Downgrade v4 firmware to v3
I am happy with the performance and behaviour of the drive for the time being and will attempt to update to the latest version at a later date.
I would like to thank this fantastic community for giving me the confidence to resolve this issue myself. I think it may have been sometime before I heard from WD Support so at least I am back on track for now.
