Flashing your TEF 6686 might seem to be tricky but it isn’t. Even more it’s almost impossible to brick your device doing a firmware update. The official firmware release can be found on Github. If you are a bit adventurous you might go for the Beta releases by Sjef Verhoeven. These firmware versions can be found on this Discord channel. (channel). I’ve often and successfully updated the firmware on my metal cased TEF6686 and on my Deepelec DP-666. How to do this update? Check the instructions below made by fellow FM enthusiast Guido Schotmans.
Update November 10: 6.9.5 Beta. Users can now choose between RTLSDR V3 or V4 in devices widget so only 1 Qt-dab installer is needed. Qt also terminates correctly. There’s however an audio problem as changing muxes, stations or devices causes a short echo burst (W11 being used).
What’s new? The device selector is now at the top of the main widget which is more user friendly. Changing the device sometimes causes Qt to fail on my Windows 11 25H2 computer.
The scan list should be more in the picture, but I must admit not seeing a difference.