Fortigate 80c v4.0 reset admin password

[khee]

Does anybody know how to do the Fortigate 80c v4.0 reset admin password ?

Maintainer account serial no. password doesn't work.

[Toshi_Esumi]

I don't remember well when we were running 4.0MR3 15 years ago or so. But I think the "maintainer" operation was the same. So try following below:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-Reset-a-lost-admin-password-on-a-FortiGate...

Toshi

[khee]

Thanks, but I already tried maintainer and it doesn't work.

[Toshi_Esumi]

Are you sure you put the correct password (case sensitive) within 14 second? If so, I don't know any other way. You need to find an older guy than me.

[khee]

yes, but unfortunately it just doesn't work. thanks.

[Kangming]

If the maintainer account does not work properly, you can only format the CF card by the console, and then use tftp to import the image to restore the device.

[khee]

I have seen that there's a way to format it, but how can I store at TFTP server before that ?

[Kangming]

Can refer to this document:

https://community.fortinet.com/t5/FortiGate/Technical-Tip-Formatting-and-loading-FortiGate-firmware-...

All configuration and image will be lost due to formatting CF, If the configuration is not important, you can do this. In addition, you need to prepare the image of the FGT80C in advance. The last FGT80C version is v5.6.14 GA Release, which may need to find TAC to download.

[khee]

thanks, but the thing is I don't have TAC account.

[Toshi_Esumi]

If you can lose the config, or have a backup config.