@Marvin_S Does that mean that there is no way to install the original OEM firmware again? I can't go back from OpenWRT! All I need is a firmware that I can flash with TFTP could you recommend someone...

Hi @Marvin_S Thanks for replying. Thr guide you provided doesn't fit my case. As I have OpenWRT installed on my router and I'm forced to uae the TFTP method to install the firmware.

When I bought this router I read online that it supports VPN. when I opened the settings I noticed that it only has VPN server support and not VPN client. After being disapointed for a couple of days...