1.QX13连接电脑，确认电脑飞傲USB驱动能正常识别QX13，如果不能识别或没有安装驱动，请前往飞傲官网下载USB驱动
2.电脑运行FiiO_Dfu_QX13.exe文件，点击“Start”开始升级
3.等待升级进度条跑完即可

注：如果中途升级失败，拔插USB按照上述操作再升级一遍即可

Update instcution
Video instruction: https://youtu.be/aEOCH4xk4u8
For the XMOS firmware upgrade, please connect to a computer through USB.
1) Before upgrading, please confirm that the USB driver is installed on the computer. If not, download and install it from https://forum.fiio.com/note/showNoteContent.do?id=202105191527366657910&tid=17
2) Download the required firmware from the official website: 
https://forum.fiio.com/firmwareDown.do
3) Download the firmware and unzip it on your computer.
4) Connect the computer’s USB to the main USB port of the QX13, and disable EQ.
5) Open the XMOS upgrade tool from the unzipped files.
6) Once the device is detected, click “Start” to begin the upgrade. Wait until the progress bar completes to finish the upgrade.

Note:
If the upgrade fails or disconnects midway, please reopen the upgrade tool and try again.