https://spirit-system.com/dl/jeti/SPIRIT-3-5.zipUpdating procedure:
Download JETI Integration ZIP archive from our web page - click at the JETI icon.
Extract the archive to your hard disc.
Connect JETI radio with USB cable to your computer.
Confirm USB connection at the radio.
Copy content of the directory SPIRIT-3.X to Devices folder in SD Card of your radio. This process must rewrite old files.
After this procedure, you should see SPIRIT.bin, REX-RS.bin files and SPIRIT directory located in the Devices.
In unit Spirit must be 3.5.0 fw ... update via SW:
http://www.spirit-system.com/download.php