I am trying to load my .srt file from brand new FPV with recent (yesterday) firmware upgrade to the latest.  Visiting https://djitelemetryoverlay.com/srt-viewer/ and selecting the .srt file that was generated returns the message "Sorry, file not supported". The site says that FPV is a supported drone for viewing SRT data.  What else do I need to do?  Trying to get help at that site linked me to this forumn

Here is an excerpt from one of the .srt files  
117 00:00:17,565 --> 00:00:17,715 signal:N/A ch:N/A flightTime:N/A uavBat:N/A glsBat:7.5V delay:33ms bitrate:50.8Mbps Height:36.6m Distance:6.9m HS:0.0m/s VS:0.2m/s gpsNum:26  

118 00:00:17,715 --> 00:00:17,865 signal:N/A ch:N/A flightTime:N/A uavBat:N/A glsBat:7.5V delay:35ms bitrate:50.8Mbps Height:36.7m Distance:7.0m HS:0.1m/s VS:1.4m/s gpsNum:26  

119 00:00:17,865 --> 00:00:18,015 signal:N/A ch:N/A flightTime:N/A uavBat:N/A glsBat:7.5V delay:36ms bitrate:50.8Mbps Height:36.7m Distance:7.0m HS:0.1m/s VS:1.4m/s gpsNum:26  

120 00:00:18,015 --> 00:00:18,165 signal:N/A ch:N/A flightTime:N/A uavBat:N/A glsBat:7.5V delay:30ms bitrate:50.8Mbps Height:36.9m Distance:7.0m HS:0.1m/s VS:1.1m/s gpsNum:26

JediDroner Posted at 2021-7-27 04:13
Here is an excerpt from one of the .srt files  
117 00:00:17,565 --> 00:00:17,715 signal:N/A ch:N/A flightTime:N/A uavBat:N/A glsBat:7.5V delay:33ms bitrate:50.8Mbps Height:36.6m Distance:6.9m HS:0.0m/s VS:0.2m/s gpsNum:26  

Sorry for my late reply. I think you are reading the SRT files from the goggles, you need to load those from the drone SD card