How to update the firmware for KA15?

修改于星期四, 六月 12 在 3:17 PM

KA15 firmware download link and update instruction: https://fiio-firmware.fiio.net/KA15/%E5%9B%BD%E5%A4%96%E5%9B%BA%E4%BB%B6/KA15%20update%20Instruction.pdf