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Why can I no longer manually zero my PowerTap while coasting?

April 26, 2017coasting longer powertap Zero

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Why can I no longer manually zero my PowerTap while coasting?

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The PowerTap Plus Series hubs now requires you to be stopped in order to execute a manual zero. For more information on this function, please review the User Guide that came with the PowerTap computer. Device IDs do not appear to be the same after updating the CPU. This is normal. The newest CPU firmware interprets the device IDs differently than previous version. We are now consistent with Garmin and other ANT+ devices. When the CPU is updated, all previously stored device IDs will be converted and there should be no need to “re-learn” the IDs. If you manually enter the old device ID into a new CPU, you will need to “re-learn” the device ID.