Hi bap_nuong,

the red status LED indicates that your operating system is not running. Here are some common issues:

• As mentioned in our Overview about FS states you need to use Example Image from V1.2.1 for your IOT2050 FS:04
• Make sure you are connected to the right port (use port X1P1 for V1.1.1 and later)
• Default IP address is 192.168.200.1 - please also check the network configurations on your laptop

If it's not possible for you to boot the operating system with this tips please connect to your device via DisplayPort&keyboard or UART-connection to check your boot order.

BR