DSM 30 Sounder - B117 Transducer Issue

I have a customer with a C90W (v2.20), DSM 30 (v4.20) and B117 transducer (E66014). There are two issues:

1. Even though the fishfinder display shows a good bottom lock, the depth data window shows no depth reading.

2. When the system is first powered up, the transducer selections do not include the B117 as an option. After a DSM reset is performed, the B117 does show as an option and can be selected. Not sure if these issues are related.

I've uploaded pictures of these.

Thanks for your help.

  No Depth - Good Bottom.JPG (Size: 120.75 KB / Downloads: 1)

  Ducer Choices Before Reset.JPG (Size: 98.98 KB / Downloads: 1)

  Ducer Choices After Reset.JPG (Size: 116.92 KB / Downloads: 2)