Smart Audio and Tramp VTX control are no longer working out of the box in Betaflight 4.1 right after flashing. The reason is that in Betaflight 4.1 you have to configure something that is called VTX Tables. Why you have to do it? Long story, the bottom line is that you have to do it.

How to fix SmartAudio and Tramp VTX in Betaflight?

Just copy-paste one of those snippets in the CLI, and save. There is really no reason to think about it for too long…

IRC Tramp compatible VTXes

vtxtable bands 5vtxtable channels 8vtxtable band 1 BOSCAM_A A CUSTOM 5865 5845 5825 5805 5785 5765 5745 5725vtxtable band 2 BOSCAM_B B CUSTOM 5733 5752 5771 5790 5809 5828 5847 5866vtxtable band 3 BOSCAM_E E CUSTOM 5705 5685 5665 5645 5885 5905 5925 5945vtxtable band 4 FATSHARK F CUSTOM 5740 5760 5780 5800 5820 5840 5860 5880vtxtable band 5 RACEBAND R CUSTOM 5658 5695 5732 5769 5806 5843 5880 5917vtxtable powerlevels 5vtxtable powervalues 25 100 200 400 600vtxtable powerlabels 25 100 200 400 600

SmartAudio 1.0 compatible devices

vtxtable bands 5vtxtable channels 8vtxtable band 1 BOSCAM_A A FACTORY 5865 5845 5825 5805 5785 5765 5745 5725vtxtable band 2 BOSCAM_B B FACTORY 5733 5752 5771 5790 5809 5828 5847 5866vtxtable band 3 BOSCAM_E E FACTORY 5705 5685 5665 5645 5885 5905 5925 5945vtxtable band 4 FATSHARK F FACTORY 5740 5760 5780 5800 5820 5840 5860 5880vtxtable band 5 RACEBAND R FACTORY 5658 5695 5732 5769 5806 5843 5880 5917vtxtable powerlevels 4vtxtable powervalues 7 16 25 40vtxtable powerlabels 25 200 500 800

SmartAudio 2.0 compatible devices

vtxtable bands 5vtxtable channels 8vtxtable band 1 BOSCAM_A A FACTORY 5865 5845 5825 5805 5785 5765 5745 5725vtxtable band 2 BOSCAM_B B FACTORY 5733 5752 5771 5790 5809 5828 5847 5866vtxtable band 3 BOSCAM_E E FACTORY 5705 5685 5665 5645 5885 5905 5925 5945vtxtable band 4 FATSHARK F FACTORY 5740 5760 5780 5800 5820 5840 5860 5880vtxtable band 5 RACEBAND R FACTORY 5658 5695 5732 5769 5806 5843 5880 5917vtxtable powerlevels 4vtxtable powervalues 0 1 2 3vtxtable powerlabels 25 200 500 800

SmartAudio 2.1 compatible devices

vtxtable bands 5vtxtable channels 8vtxtable band 1 BOSCAM_A A FACTORY 5865 5845 5825 5805 5785 5765 5745 5725vtxtable band 2 BOSCAM_B B FACTORY 5733 5752 5771 5790 5809 5828 5847 5866vtxtable band 3 BOSCAM_E E FACTORY 5705 5685 5665 5645 5885 5905 5925 5945vtxtable band 4 FATSHARK F FACTORY 5740 5760 5780 5800 5820 5840 5860 5880vtxtable band 5 RACEBAND R FACTORY 5658 5695 5732 5769 5806 5843 5880 5917vtxtable powerlevels 4vtxtable powervalues 14 20 26 30vtxtable powerlabels 25 100 400 1W

The snippets were taken from ttps://github.com/betaflight/betaflight/blob/master/docs/VTX.md#complete-examples