Troubleshooting Tip: FortiProxy upgrade failure: Image upgrade failed (-362)

Description

This article describes the steps to troubleshoot and resolve issues encountered when upgrading FortiProxy devices. During the upgrade process, the error message 'image upgrade failed (-362)' may appear.

Scope

FortiProxy v7.6.

Solution

Follow the steps below to troubleshoot and resolve the image upgrade failed (-362) error:

1. Perform the upgrade using the GUI and review any error messages displayed during the process.
   
   
2. If the upgrade fails, proceed with the upgrade via CLI using the command:

execute restore image url <firmware_URL>

Ensure the correct firmware image URL is specified.

Technical Tip: Restore image using an FTP server and from an URL

3. If the issue persists, verify the system configuration and confirm that the login-lockout-upon-downgrade option is disabled:

config system password-policy
    set status enable
    set apply-to admin-password
    set minimum-length 12
    set min-lower-case-letter 1
    set min-upper-case-letter 1
    set min-non-alphanumeric 1
    set min-number 1
    set min-change-characters 0
    set expire-status disable
    set reuse-password disable
    set login-lockout-upon-downgrade disable
    set password-history 2
end

4. If the option is already disabled, remove all administrator accounts, retain only the default admin user, and proceed with the FortiProxy upgrade.

    

    

5. Perform a factory reset on the FortiProxy device, then repeat the upgrade process.

   Configuration backups and reset 

    

6. If the issue remains unresolved, perform the upgrade using a TFTP server.

   Formatting and loading FortiProxy firmware image using TFTP