This document describes version 1.2.16 of the firmware for the thinkRF D4000 downconverter/tuner.

It is distributed as a single binary file, thinkRF_D4000_firmware_v1.2.16.img.

This version of the D4000 firmware is compatible with all thinkRF D4000 products.

Fixed Defects

1. Reverted one of the changes to boot order from the previous version which sometimes caused

communication to slow down.

New Features


Known Issues and Limitations

1. The unit will sometimes boot to a fault state. In this case, the status LED will blink red and

the unit should be rebooted.

2. At specific points within the operating band, the device is slower to tune. See Support Articles

 for details.