1
2
3
4
5
6
7
8
9
10
11
12
 Param: value: 0 - 255,
    Divided into high and low two parts, the lower 4 bits for LOAD behind 4 for special flag
    Current use:
     LOW 4BIT: 0: normal startup the system disk firmware,
               1: Start the the user disk upgrade firmware,
               2: Direct start Loader USB (show only user disk)
               3: start Loader USB (display system disk and user disk)
               Other: useless.
     HIGH 4 bit:
               0b0001: upgrade flag.
               0b1000: User plate opening flag.
               Other: useless.