LED continuously flash orange - DZero/Four/EagleMTB ONLY

Symptom Description: The power meter's orange colored LED flashes on and off continuously. While in this state the power meter will NOT connect to a head unit.

Cause:  The power meter is in bootloader and the existing firmware is incomplete, leaving the power meter stuck in bootlader. This issue affects DZero power meters with firmware version 1 ONLY. 

Firmware version 2 (and onward) preserves the existing firmware while in bootloader. This means that if the new firmware does not load within a 10 minute window, the power meter reverts to the existing firmware, returning it to normal function.

Resolution: You must re-load the power meter firmware using the SRAM AXS app. Complete the below troubleshooting. If doing so does not resolve the issue, contact Quarq Customer Service


1) Open the AXS app and search for nearby devices by tapping the search button in the top right.


2) Tap "Connect" when your power meter is identified. The power meter ID may be reporting as either "ABC12345" or "DFUTARG".



3) Select "Firmware Updates" to open the firmware menu.



4) Select "New Firmware is available" to begin the firmware update process.



If normal function does NOT return, please contact Quarq Customer Service.  

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