The simpliest thing which can be done in such case is to undo changes made by the updater. Before each update, your server makes full backup of all important files. Currently, there’s no automatic procedure for reverting those files, so you have to do it manually:
- find folder
.updates which contains backups made by the updater script. Then select apropriate (latest) subfolder and find backup folder in it – its name should contain date when the backup has been made. You should copy all files from this backup folder to the main folder of your PrivMX server.