Earlier firmware versions, including 2.01 & 2.03, of the S4 monitor have difficulty connecting to the more modern usb-host-controllers.
If your monitor falls before the 2.01 firmware version, CLICK HERE to purchase your monitor upgrade.
WaterRower has produced upgraded firmware to resolve this problem, available in versions 2.10 and above
Note- you may check your firmware version as follows- Switch on your S4 monitor, press the "advanced" button until you reach advanced function 9, then press "OK". Your firmware version is now on the bottom right.
Please complete the registration form below to be contacted about updating your board to a newer firmware version.
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