BESV CF1 - Firmware Version Information; Understanding Firmware Display

Technical Manual - BESV CF1
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Firmware version information
After entering "version information", the "status indicator" will keep flashing with
purple color. At the same time, "assistance indicator" will show main version and
sub version sequentially.
For example : firmware version is 1.003
2
1
2
0
2
2
2
1
2
0
2
2
Main version : 2
0
= 1 Subversion: 2
0
+ 2
1
= 3