SN：位于外包装条码或设备背面贴纸。SN: On the packaging barcode or back sticker.

UID：位于外包装二维码；或开机时长按 ENT 进入工程界面扫描查看。UID: On the QR code, or hold ENT on boot to scan QR.

如验证失败，请核对信息或联系授权代理商。If verification fails, check your info or contact reseller.