I have what I believe is an early production HMN4104A Display Speaker Mic for an APX7000 (See picture Below). When hooked up to the APX it gives me the "unsupp usb device" message and "no usb" shows up on the display. When using the channel selector on the mic when connected, I get shapes and other colors but no channel info. I also get Roman Numerals I and II when hit the side buttons as well as up and down arrows when attempting to use the volume control.
The mic does tx and mic works fine, just all these other issues!
Any ideas on how to get this thing working? Is there firmware revisions with this mic due to display?
Thank you in advance for any help
radio43
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