Downgrade 3.6.4 --> 3.5.x

[DeadlyVenom]

Is this in anyway possible?

[Beller]

Without a fesh install , I doubt it....
Why would you want to?

[peterska2]

It is not possible to downgrade. However if you have a database backup you can restore that backup on that version and overwrite the files with the ones for the version that you wish to use. Please note though that in doing this you will lose all data since the backup.