https://docs.fortinet.com/uploaded/files/1708/Resetting_a_lost_admin_password.pdf
via console access 9600,n,8,1:
logon immediately after login prompt with:
username: maintainer
password: bcpbFGT60E4Q16092486
(bcpb+serialnr)
Change old password with:
In a unit where vdoms are not enabled:
config system admin
edit admin
set password <psswrd>
end
In a unit where vdoms are enabled:
config global
config system admin
edit admin
set password <psswrd>
end
reset to factory default with:
exec factoryreset
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