Zyxel USG 100

gudoule

Hello,

How to solve issue

Cli Number :0

Error number: -2

Error Message: Not connected to ZySH Daemon

Best regards

Zyxel_Tina

Hi @gudoule,

Firstly, we would like to confirm whether your device is a USG 100 and not a USG Flex 100. If this is correct, please note that the Zyxel USG 100 is an End-of-Life (EOL) product, with support having ended on June 30, 2018.

Regarding the problem you are encountering, could you please try the following steps:

1. Reboot the device — This often resolves temporary system module failures.
2. Check firmware version — What is the current firmware version of your USG 100? If it is not running Firmware_3.30(AQQ.7)C0, please update it to this version. I will provide the firmware to you via PM.

If the issue persists, we strongly recommend considering an upgrade to a newer security device, such as USG Flex 100H/USG Flex 100.

gudoule

Hello,

Firewall is a usg flex 100 i try to update software with firmware 540ABUH0C0.bin. I use ftp method, but when i reboot i always have the alert windows with the message

Error Message: Not connected to ZySH Daemon

Best regards

Zyxel_Tina

Hi @gudoule,

To better understand the situation and provide more accurate assistance, could you please help share the following:

1. A detailed description of the sequence of events, for example,
   • Where does the error appear?
   • When does the error appear?
2. A diagnostic file from the device
   • If the web GUI is accessible, please send it to us via private message
   • You can refer to this FAQ for instructions on how to collect the diagnostic file

This will help us guide you more effectively. Thank you!