This is an individual test firmware for customers who only use Ethernet port to stream from SIYI cameras and who streams 4K only.
A8 mini Test Firmware
https://drive.google.com/drive/folders/1NQ_3XvIwvTjGuG8_C4DWIHxceHJFWp1-?usp=drive_link
If you expect 4K Ethernet streaming from other SIYI cameras as well, please feel free to leave a comment.