Error: Timeout when sending parameters to device, auto retry 1 times, the device is not responding. Please try again.

The following error can be received when attempting to set parameters and activate the device by sliding the toggle after registering under the my devices page in app.

This is a known connection error that is typically found in older devices that are not up to date on firmware. Check the status of your firmware to be sure you are up to date to v 0.16.0. Please see the article on how to check your firmware.

If you need to complete the firmware update please see the articles below:

Firmware v 0.16.0 Dark Measurement Fix

VCP Driver Install for USB Interface Connection

If you are up to date on firmware, try rebooting your phone and completing the 10 Second Device Reset method.

Resetting the Purpl Pro:

If you complete the reset and are up to date on firmware and continue to receive the error please reach out to Tech Support at and submit a ticket.