dhak, thanks for link.
A&H says in this link (i copy it complet here): “When an AR is connected to a GLD the AR firmware is ‘synchronised’ with the GLD’s mixer firmware. To all intents and purposes the ‘firmware’ that is sent to the AR (via the GLD) is irrelevant for Qu operation, it is GLD specific.
Accordingly you don’t need to ‘update’ an AR rack for use with the Qu series – it will work out of the box – and as such there is no benefit to be obtained by occasionally connecting an AR with a GLD if you only intend to use it with a Qu!”
j