When a firmware version is labeled as "hot" in the community, it usually implies:
It includes updated binary files for various panel codes (e.g., V320BJ6, HV320WHB). hktrt2851v09 firmware hot
If the image is inverted after the update, enter the Service Menu , find "Special Settings" or "Panel Settings," and toggle the Mirror option. When a firmware version is labeled as "hot"
Improved menu navigation speed and faster channel switching. enter the Service Menu