How to backup running configuration if forgot password?

Zyxel_Stanley Posts: 1,374  Zyxel Employee
First Anniversary 10 Comments Friend Collector First Answer
edited June 2022 in Maintenance

Note: You must physically beside at your device, and using serial connection for below SOP

You can follow these steps to backup device running config:

1. Reboot device

2. Enter debug mode and type “atkz –b”

3. Use “atgo” booting device

4. Now device will reset system-default configuration and backup old startup-config.conf to “startup-config-back.conf”

5. After device boot up, download “startup-config-back.conf” to replace admin’s password.

a.)Find out the below CLI(prefix with “username admin encrypted-password”) in “startup-config-back.conf”

username admin encrypted-password $4$encryptedpasswordencryptedpassword$ user-type admin

b.)Replace CLI to……

username admin password yournewpassword user-type admin

6.      Save and rename startup-config-back.conf, upload to device and apply it.


  • EncapsICT
    EncapsICT Posts: 3  Freshman Member
    First Anniversary First Comment
    Hi There,

    We had trouble with our Passwordmanager and lost access to an ATP200 and an ATP500.

    Can you confirm that this procedure works for these devices also?

    Looking fordward to your reply,