OTA firmware update troubleshooting

XBee 3 Zigbee: Missed # replies in a row from client

The message "Missed # replies in a row from client" (or a similar one) appears in the xbee.log if an attempt to update an XBee 3 Zigbee device fails.

Resolution

1. Verify that the link quality along the route between the gateway node and the client node is good. If it is not good and multiple packets are dropped, the update process will fail.
2. Verify the client node is not configured for a very short awake time, or an asynchronous or cyclic sleep with a sleep period longer than a few seconds. Sleep periods longer than 15 seconds or very short wake times may cause communication timeouts and failures. Reconfigure the client node to either not sleep, or to use more update-friendly timings. See the Digi XBee 3 Zigbee User Guide for more information.