I have an old iMac G3 slot loading running on OS 9.2. I do not have the admin password or access. I am trying to update the firmware so I can update the OS however it was previously a school computer and is extremely locked down. I do have access to the general account but there's not much available on that. I have the firmware updates on CD. There is no open firmware password. When I try to enter the command terminal or single user mode - I cannot. I boot up holding + S but it just boots up like normal. How can I fix this? Either by getting into SUM or the command terminal or any other way of being allowed to update the firmware so I can install the new OS!! Thanks!