I have just received my G90 and inside the box is a green card that says that my transmitter is shipped with RF2 mode enabled.
Yet on startup, it does show neither RF1 nor RF2.
The G90 'Find Unused Channels Mode' has the open/filled boxes, not the bars as shown in the latest revision of the manual.
So my guess is... despite the card saying otherwise, I still have the old firmware. The serial numbers on the box do match the serialnumbers on the equipment.
(By the way: 'Open channels are boxed'... Open = Unused and Boxed = Filled?, so a channel with a black box means it's unused?)