My book studio ii 2tb failed firmware update

I have a 2TB My Book Studio II from last year still under warranty. It works well. I’m trying to upgrade the firmware with wdfirmwareupdater but at the end of the process when everything seems to have worked it say: updating and 'failed, check the connection cables.
I tried it on 4 different mac and with different USB cables, but nothing.
I have another identical wd II book to which I upgraded about 8 months ago with no problems! So the process I know!

Why can not I? Yet it all works until the end, recognizes that the firmware and 'to update, it downloads from the Internet, but this did not happen.


Try to contact tech support directly on this case.

I have the same problem with the same device. I just emailed WD support to report the issue.