Thingy provides you with several options for upgrading its firmware.

Thingy mobile app is the default way of updating the Nordic-released versions of the firmware. For details, see the Nordic Thingy:52 User Guide.

To perform a DFU with custom firmware, you must first generate a DFU package. See OTA-DFU - Generating your own packages. Then, use one of the following ways to update the firmware: