Hi,, The link now opens. I have given exception to the website and then opened.
But please see the hardware version 2750u on the page.
My hw version is Dsl 2750u h/w.W1 F/W.In. 1.01 as per the label, manufactured December 2020, coutry of origin: china
But there is no firmware available for this version IN THE LINK
https://ibb.co/Q85dzFS