I have a DSCS9 device running android 7.1.2 that is having trouble updating its player version from the CMS (2.3.6). I can confirm XMR is functional as I am receiving a screenshot back instantly between the collection interval time.
I have followed the instructions as per https://xibo.org.uk/docs/setup/cms-v2-and-later-upload-and-install but still the player will not update. I have also done multiple factory restores. I have also run up a demo instance of the CMS in the cloud and still no update.