How to open the function of upgrading via serial port for VM300

1.Firmware upgrade VM300. (First of all,I need your MAC address,for example
00:17:13:10:00:04)

2.PC open the TFTP service, choosing the right TFTP file path.

3.telnet VM300, user:admin, password:admin.

4.remote upgrade BootLoader.



5.Bootloader upgrader success, restart began using a serial port upgrade
debugging.

6.OK!

How to open the function of upgrading via serial port for VM300.pdf