I purchased 4 Tradfri switches to use with the hue system. So far, 3 of the 4 are working fabulously. The 4th, however, absolutely refuses to update to the latest firmware.

I've come across the usual tricks -- time (the others took 3, 19, or 27 hours to update, and the app has timed out 2x for the last one), swapping batteries, and restarting the hub & switch. Is there anything else I can try?

The others were so easy! I'm so glad that I didn't try to set up this one first, or they all would have gone back to the store.

In case it is useful, the gateway is on version 1.3.14. All 4 switches started on version 1.1.1.1-5.7.2.0 and 3 of 4 were upgraded to 1.2.214.

Thank you!!