Currently this is the recommended RV50(X) firmware for use in Campbell Scientific applications. It is recommended that RV50(X) modems running older versions be updated.
(Warning: Upgrading from ALEOS 4.15.x and earlier releases to 4.18.1 is not directly supported. AirLink RV50X routers must be upgraded to ALEOS 4.16.0 (see RV50 Firmware 4.16.0.021) before upgrading to ALEOS 4.18.1.)