14.Does the K13 R2R support firmware update?

The K13 R2R contains three independent components with software programs: the microcontroller, XMOS, and Bluetooth. All three components support firmware upgrades. The microcontroller and XMOS require upgrades via a computer, while the Bluetooth firmware can be upgraded over-the-air (OTA) using the FiiO Control app.

K13 R2R firmware download link: Not available currently.