Reset a Zyxel Switch
Issue
You are locked out of a Zyxel Switch cause you have lost the password or simply don’t know it.
Solution
This article requires you do download Tera Term : https://osdn.net/projects/ttssh2/releases/
1. Download the ROM file from FTP
In order to do the factory reset, we will need the default configuration file (.ROM) which can be found on our official FTP:
Navigate to the directory with the exact name of your switch to find the firmware:
In this example we will use the folder of the GS2210-8HP:
Click on the firmware folder and download the latest firmware for your device, extract all files to a location of your choice – for example, the desktop.
2. Connect the console to the switch
Please connect the console cable to the RS232 of your switch and you can use a terminal emulation software such as Tera Term to connect to the switch using the COM port.
3. Power on the switch and enter the debug mode
Power on the device and wait until you see the prompt:
Press any key to enter debug mode within 1 second
Press any key now and you will enter the debug mode.
On the screen you will now see the following:
GS2210-8HP>
4. Start the XMODEM upload mode.
By typing atlc you will start the XMODEM upload mode.
GS2210-8HP> atlc
5. Upload the ROM file
- In Tera Term navigate to File > Transfer > XMODEM > Send…
- In the opened window select the previously downloaded .ROM file and click “Open”
- This will start the send process, it might take a while to upload the file to the switch.
Note: This upload may take several minutes.
- This will start the send process, it might take a while to upload the file to the switch.
Once the switch has received the ROM file, it will start overwriting the existing configuration file with the default configuration file (.ROM) and therefore resetting the switch.
When the console prompt returns to:
GS2210-8HP>
Please type in the following command:
GS2210-8HP> atgo
This will reboot the switch.
Once the SYS LED stops flashing the switch is fully booted and was set back to factory defaults, ready to be configured again.
Video
Source
https://support.zyxel.eu/hc/en-us/articles/360001481900-How-to-Reset-A-Switch-Via-Console