I have already upgraded to the latest version of 1.2.1rel. DPN full routing can access YOUTUBE, but Chinese domestic websites cannot. DPN intelligent routing mode, some external networks can access, but YOUTUBE cannot. I want to downgrade manually, there is no rom file, hardware There is no manual reset button on the information page. I have two old devices, 1.1.14 has not been automatically upgraded, and there is no problem for the time being. I sent an email requesting technical support, but no one responded. How should I solve it.
