please don’t use that jar as it will break all broadlink things 
as for versioning: there probably won’t be a 2.5.3 stable if there are no bugs in openhab core - this version, especially the snapshot, is for the ability to update the addons: https://community.openhab.org/t/development-of-openhab-3-0-0-and-2-5-x/89376
