WalkieFleet 5.8.3 introduces valuable updates in the video calls extending range of possible video resolutions up to Full HD. We did a huge job to achieve this and had to redo a lot in the software code at all levels. Unfortunately, it made impossible to preserve compatibility of the video calls with the previous WalkieFleet versions. In case if you update WalkieFleet server to the version 5.8.3, older clients will not be able to do video calls. Voice data transmitted along the video calls between old and new clients will still go properly, but not video data.