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martyyy
martyyy
Explorer III
February 15, 2024
Solved

'Installed firmware is not signed by Fortinet' error

  • February 15, 2024
  • 1 reply
  • 2840 views

When we logon to the unit we receive an error that the Firmware was not signed by Fortinet. This was after an upgrade to FortiOS 7.2.7.

 

The previous FortiOS version is 7.0.12 the resolution for this is to update on 7.0.13 and the error message still appears and now we upgrade it to FortiOS 7.2.7 still having the error message.

 

The unit is part of a HA cluster. The second unit of the cluster does not have the error.

 

Any workaround or recommendation would highly appreciated.

 

 

 

 

Best answer by hjezzapaula

Hi, 

You may check on below KB to resolve this error

https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-Installed-firmware-is-not-signed-by-Fortinet/ta-p/247112

To resolve the issue, re-flash the affected device. Manually download and verify the OS image from this page: https://support.fortinet.com/Download/FirmwareImages.aspx

1 reply

hjezzapaula
Staff
hjezzapaulaAnswer
Staff
February 15, 2024

Hi, 

You may check on below KB to resolve this error

https://community.fortinet.com/t5/FortiGate/Troubleshooting-Tip-Installed-firmware-is-not-signed-by-Fortinet/ta-p/247112

To resolve the issue, re-flash the affected device. Manually download and verify the OS image from this page: https://support.fortinet.com/Download/FirmwareImages.aspx

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