I bought N750 last friday, and I updated to the latest firmware.
But there is one thing really annoying. when I login to router, it keep saying ‘this product is not registered’
So I clicked OK button to register this product. but it didn’t work.
When I click ‘Register’ button in advanced setup, nothing has changed.
Internally, it is going to send register request through ‘register_send.php’
but I figured out that I always got ‘Internal Error 500’
Here is the solution.
enter the script below in URL address area.
javascript:PAGE.Register_set();
if you are using chrome browser, you can enter it in console (short cut is Ctrl-Shift-J)
That’s it. now you are free from annoying message. try to relogin to web interface.
it’s gonna say ‘Your router has already been registered. You can re-register by clicking on Register button after entering name and email address.’
Hope this help to someone.