RP4.2-BM21 Reverse Sensor Chimes Not Working

This update file fixes issues seen with reverse sensor chimes not working on the RP4.2-BM21.

INSTALLATION INSTRUCTIONS

1. If this is the first time using the RadioPRO PC Application, download the Radio PRO PC Application Here
2. Download the firmware file below.
3. Install the Radio PRO PC Application using the .exe file you downloaded in step one.
4. Open the RadioPRO PC Application using the new shortcut created on your desktop.
5. Connect the interface to the computer using a standard to micro USB cable (must be a data transfer capable cable).
6. Click the "Firmware" icon.
7. Click “Select File” and browse to the new firmware file. The new firmware can be found where you saved it in step 2.
8. Once the file is chosen the update will begin. When successful it will show the text "Update Completed".