Restore an Installation
If you experience problems with your YouTrack installation, you may need to restore to the most recent working version. Common scenarios that require that you restore an installation include:
You are unable to upgrade your installation successfully and need to restore the previously-installed version.
The database of your installation breaks and you need to restore the current version from a backup copy of your database.
In both cases, you can restore your installation using a valid backup of your YouTrack database. If your backups are out of date, you can attempt to restore your installation using valid copies of your configuration and data files. Restoration is only possible if you have either a valid backup or a copy of your database that is not corrupted.
You should test this procedure on a regular basis to make sure you can use your backup files to restore your installation after an outage or attack.
Please follow the instructions that are specific to your installation.