[Release notes] Struven ketju 4.5.0.18

From release notes:

Sailfish OS does not support downgrading. Never try to downgrade the OS as this would break your device.

Does this mean I should not flash 4.4 if I have 4.5.0.18 installed by flashing? I know it seems pretty obvious but Im not having a good run on 4.5.0.18. Browser playing video has reverted back to a freez and play. OSM scout no gps lock. Gpodder white screen. WIFI wont connect to 2.4G networks. Only 5G.