280 bytes added
, 13:27, 21 June 2018
{| class="wikitable"
|-
! firmware version !! code digits !! coding scheme upgrade !! notes
|-
| <= 2017-09-01 || 3 || (no previous coding scheme) ||
|-
| > 2017-09-01 and < 2018-xx-xx || 4 || XXX => 1XXX ||
|-
| >= 2018-xx-xx || 5 || XXXX => 2XXXX || screw moved for 0,5 cm
|}