Hello,
Downgrading the software version always results in a loss of configuration. You will not be able to save it unless you have a version 01.14.4 backup file.
You can rollback firmware via Web Ui System > Firmware page. The Update Settings section is used to load the device's firmware. The firmware image can be downloaded here and uploaded later from your computer.
Or you can try reinstalling the software via Bootloader menu. You can find instructions on how to do that here.
Regards.
