Log Download on sg 230 via ssh

Hello, my question is still the same as here Log Download via ssh with the knowledge that winscp with loginuser does not download all Logs (only 2.7 GB of 50 GB) and copying to /tmp is not possible because...
factory reset SG 450

hi all, got a SG 450, how would i factory reset just from hardware ie the front panel or even a pin hole if its got one as i dont know the password to get in cli or the web gui thanks, rob