Download backup files
cd /tmp wget [DATABASE BACKUP FILE URL] wget [FILES BACKUP FILE URL]
Suppose your backup files are downloaded at /tmp
gunzip [DATABASE BACKUP FILE.sql.gz] tar xvf [FILES BACKUP.tar]
Go to your ERPNext installation folder
When restoring from database, the 'Administrator' user password gets reset to 'admin'. To set a better password when restoring, set admin_password variable in conf.py to the desired 'Administrator' user password.
Restore database using:
lib/wnf.py --install [DATABASE NAME] /tmp/[DATABASE BACKUP FILE.sql]
Copy extracted files
cp /tmp/[FILES BACKUP EXTRACTED FOLDER/---/public/files/*] [YOUR ERPNEXT INSTALLATION]/public/files/