H1283 is a powerful network player. A third-party firmware that has been flushed some time ago does not support Panel buttons. As a result, you cannot press this key to enter the forced flash mode. After searching for a long time, I finally found a hidden Method for flashing.
First, you must be able to access the player through telnet, and then install the official firmware or other firmware that you are sure you can use normally. copy and paste IMG to the root directory of the USB flash drive, and create an empty file tag_install in the root directory of the USB flash drive as the fl flag. Then insert the USB flash drive to the player and enter the following command in the terminal command line:
Stopallkill-6 1
Wait a few seconds before the player restarts, and then stop on the boot logo screen. Then, the firmware will be refreshed automatically.