U4 Receiver: Determining the firmware

FAQ #1903 Updated February 16, 2018


How do I determine the firmware version of the U4?


To determine what version is installed in the U4 receiver.

1. Power on the receiver.

2. Press the + and - buttons for 5 seconds.

3. Firmware version will show in the LCD display.

4. Must be version 2.0 or higher to work properly with the UA888/UA111 software.

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