If your RC210 uses the older ATMega128 CPU then this is the Updater program you want. If you have the new ATMega2561 CPU, click here

Quickly and easily load operating firmware into your RC210 with our Updater program. This program is available free of charge. Download the complete installer by clicking Download below.

 If you have an older version of Updater (V1.0), it is already installed on your computer and would like to update it to the new 3.0 version, you may download the update by clicking DOWNLOAD below (Version 3.0 provides automatic reset of the RC210 so you no longer have to power cycle it to start the upload).