Owner's manual

GuiLin FeiYu Electronic Technology Co., Ltd. www.feiyudz.cn E-mail: [e-mail] 3 | P a g e
Click your control panel: Click on system: Hardware, click Device Manager:
Check the COM Port number for Prolific USB-to-Serial Comm Port:
Select the right COM number and device type onto your Firmware upgrade
program:
STEP 6: Click “Open ” button. If the COM port is right, the word “Open” will change to “Close”. Check
your COM port number again if this fails.
Warning: Do not connect the USB cable with the FY module before
“Open ”, or the wrong operate step will cause the upgrade process
fails.
Note COM number.