can anyone tell me how to downgrade to previous versions?

You can return to your original installation version of Volumio by doing a factory reset. Other than that you will need to flash the version that you had previously.

Hi Angelo.B,

Depending on your needs it may be helpfull to install an older version, yes - may be.
Please tell us what you are missing.

Best Regards

after the last two updates the brutefir plugin no longer works.