It is up to you whether or not you want to downgrade. WD did not give us any help on that.
As I wrote above, It looks like the downgrade changes the time that the battery is left charging before allowing it to discharge to 80%. I think that WD decided to play it safe and not allow the battery to remain at full charge for too long while it was still charging, so they pulled the 1.06.06 firmware release.
Since WD advises everyone to use the latest firmware, and since v1.05.01 is now the latest, it is probably wise to use that version.
I seriously doubt that will be any other firmware updates because the product is older now. I don’t think there will be any new features or improvements. The only firmware updates that we might see will be to fix serious problems, if they are found.
