Forum Discussion
Hannes_Rapp
Mar 06, 2018Nimbostratus
You cannot downgrade from v12 to v11. When upgrading, you must ensure one partition remains with old version as a fallback option.
Did you click "install configuration" when rebooting to v11 from v12? If yes, your best bet is to do a clean install of v11, and manually migrate your configuration back to v11. On your v12 boot location, look for your configuration elements in
/config
directory, or just use an UCS image backup from v11 (if you have one).