Factory Reset of TP-Link Archer MR200

Hi, I have a TP-LINK Archer MR200. Someone had installed openwrt to this router, and made some configuration. I don't need those openwrt setting, so I had a Factory Reset in order to reset to factory setting. But after my Factory Reset, I cannot use ssh root@, it said connection refused. When I entered to browser, it went to my TP-LINK Archer MR200 admin page. When I enter, the browser response 403 forbidden. When I check in the MR200 admin page, the firmware version is TP-LINK firmware version. May I know how can I check if my firmware is openwrt or TP-LINK factory firmware? It seems the openwrt setting still affect my network.

@anthony, welcome to the community!

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