USB-LAN
I identified the contacts for the DIY adapter.
Connect to PC or Smartphone/tv-box without WiFi 5G.
rtsp://192.168.2.160/livestream/12 - video stream witch VLC player or MediaPleerClassic
1) Connect any device on WIFI Fifish v6.
2) Use apps VLC (windows/android) and connect to "http://192.168.2.160/livestream/12"
I found this in the source code of the application.
For low latency use flag UPD and cashe 0ms.
HDMI BOX from Qusea (240$) = Raspberry (40$)+ apps (free)
The analogous problem was during the post-dive (4 months ago). A new firmware for the device has been released today, I hope the problem has been fixed.