Edit vfd.conf as below
To reverse the order of the digits change the line
vfd_chars=‘4,0,1,2,3’
to
vfd_chars=‘4,3,2,1,0’
Note: The first number (4) does not change - it is colon.
The other four are put in in reverse sequence.
.# 0x01 in first position to put display upside down
vfd_display_type=‘0x01,0x00,0x01,0x00’
The exact entries will likely be different for different displays/boxes.
Thanks to @TheCoolest for the information.