HyperDeck Shuttle Start/Stop for Arri Alexa

Has anyone had success with the Hyperdeck Shuttle getting the record start/stop trigger out of an Arri Alexa? My unit with firmware 3.8 installed does not recognize the trigger. Based on an old press release from Blackmagic this feature was supposed to be available as of 2.5.
http://www.blackmagicdesign.com/press/p ... seID=27205
We have a Sound Designs PIX240i on set for playback which has no problems with the REC trigger out of the Alexa. I was also able to trigger the Hyperdeck Shuttle to REC using an SDI feed from the PIX240i so I know that the Hyperdeck unit is not faulty.
Any Ideas? Kinda disappointed in my new purchase if it can't do what was boasted!!
IAIN
http://www.blackmagicdesign.com/press/p ... seID=27205
We have a Sound Designs PIX240i on set for playback which has no problems with the REC trigger out of the Alexa. I was also able to trigger the Hyperdeck Shuttle to REC using an SDI feed from the PIX240i so I know that the Hyperdeck unit is not faulty.
Any Ideas? Kinda disappointed in my new purchase if it can't do what was boasted!!
IAIN