The flashing is generally divided into online upgrade, local upgrade, and forced flashing.
Online upgrade generally requires an engineer to push the upgrade package in the background before it can be used;
The local upgrade package is used to flash the machine by itself. Generally, the version after flashing is required to be higher than the current system version number, otherwise the system will not recognize it;
Forced flashing is used when the TV cannot enter the homepage, cannot enter the system, or the flashing package is a mandatory upgrade package.