Zyxel USG20W-VPN Firewall Firmware 4.20(ABAR.1)C0 Download

Posted at December 26, 2024 by PCI-DB Team

Zyxel USG20W-VPN Firewall Firmware 4.20(ABAR.1)C0 Description

Modifications in V4.20(ABAR.1)C0 

1. [BUG FIX] eITS#160800705 Guest wizard in easy mode gets wrong.
- enable the Guest network via wizard  
- No IP address and DHCP server but port role is correct. 
2. [BUG FIX] eITS#160800624 The GeoIP can't update successfully, and shows 124014 error.
3. [BUG FIX] eITS#160800733 When collecting diag-info by GUI and also in console, the device will reboot.
4. [BUG FIX] eITS#160800621 USG will keep send out “R_U_THERE” even though the DPD is not checked.
5. [BUG FIX] eITS#160800900 Unable to create a new VLAN. [Condition] When clicking the add button, loading screen hangs.
6. [BUG FIX] eITS#160800995, 160800977 Upload firmware with a long filename, it will fail. [Condition]
- Go to file manager>firmware management
- Update a firmware with a filename more than length 31
- Update will fail. 
7. [BUG FIX] eITS#160401060 After few days, the mail sessions reach the maximum threshold and Anti-Spam stop working. [Condition] User select drop action of spam SMTP mail in Anti-Spam profile setting.
8. [BUG FIX] eITS#160800622 IDP signature Link has wrong destination. [Condition] On the dashboard, you can click the signature ID on the GUI. The URL is wrong.  
9. [BUG FIX] eITS#160900521 Firmware 4.20 - Every logged user is able to download "startup-config.conf"
10. [BUG FIX] eITS#160900525 USG110 with CF and Safesearch random reboots
11. [BUG FIX] eITS#160900582 When edit Anti-Virus rule, configuration change not writes correctly.
12. [BUG FIX] eITS#160900560 When edit exist BWM rule, and disable “Maximize Bandwidth Usage” function. It not writes into configuration.
13. [BUG FIX] SPR#160801023 Click “Configuration walk through” and “Troubleshooting” at NAT page, the link will display “Policy Route” information..

The following is the firmware upgrade procedure:

If user did not backup the configuration file before firmware upgrade, please follow the procedures below:
- Use Browser to login into ZyWALL/USG as administrator.
- Click Maintenance > File Manager > Configuration File to open the Configuration File Screen. Use the Configuration File screen to backup current configuration file.
- Find firmware at www.zyxel.com in a file that (usually) uses the system model name with a .bin extension, for example, “420ABAR2C0.bin”.
- Click Maintenance > File Manager > Firmware Package to open the Firmware Package Screen. Browser to the location of firmware package and then click Upload. The ZyWALL/USG automatically reboots after a successful upload.
- After several minutes, the system is successfully upgraded to newest version.

About Device Firmware:

Applying a newer firmware version than the one already installed on your unit can bring various enhancements, include workarounds for diverse problems encountered by the device, and improve or add newly developed features.

On the other hand, downgrading the firmware version can recover the device’s functionality in the event of a software update either turning up faulty or causing the unit’s overall performance to drop. However, bear in mind that applying an older firmware isn’t recommended and might not always be possible.

When it comes to the update steps, due to the large variety of devices and numerous ways for installing a new firmware, it is recommended that you carefully read and understand the upgrade steps, and consider applying a different firmware only when you have familiarized yourself with the update method.

As the installation process is most of the times quite risky, this step should be taken by users that have the ability to successfully complete the update; regular users may initiate it at their own risk. Moreover, it’s best that this task be performed in a steady power environment such as the one ensured by a UPS unit.

Therefore, if you consider applying this release, hit the download button, take into account all the aforementioned aspects, and update the device’s firmware. Also make sure you constantly check with our website to ensure that you don’t miss a single new release.

  It is highly recommended to always use the most recent driver version available.

Try to set a system restore point before installing a device driver. This will help if you installed an incorrect or mismatched driver. Problems can arise when your hardware device is too old or not supported any longer.

Related Zyxel Drivers