Firmware
- Weekly Firmware / Support Version / Lab Version
- Changing the downloadable firmware slot on ATP / VPN / Zywall / USG series routers
- How can I update the firmware automatically from a USB storage?
- How to upgrade USG devices via cloud-service
- I can´t use Cloud Firmware Upgrade due to an error message "ITS installed"
- Overview of Helpful CLI Commands for USG Series (Best Practice)
- Upgrading the firmware of your USG / ATP / VPN device done properly
- USG & Zywall - Firmware update per FTP
- USG Firewall crash logging procedure
- USG Series - Update very old firmware versions
- What happens after expiration of my one year Firmware-Upgrade-Service ?
- ZyWALL USG Firmware Update in Device HA Mode
- Zywall-USG shows empty blue page after Firmware-Update to 4.25
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Invalid Serial Number
Unfortunately, we could not verify the warranty status of your device. Please check if you have typed in the serial number correctly and try again. Please contact our support, if it is still not working.
We are sorry to inform you, that the product is not covered by warranty anymore. If you can prove to us, that you purchased the product within the last two years, please provide a copy of the invoice to us.