This seems a question for their tech support. My guess is they will say that a factory reset is the only solution, if you want it or not.
We installed one Extreme Network's 'Summit X450e-48p' switch in our organization. Unfortunately, we forgot it's admin account password and we don't have any other account on this switch to work on it.
Anybody to guide us how to break admin account password for a Summit switch. We don't want factory reset.