I can only access the links that have an agreement with Sony. Is it possible to unblock and have free access to the internet?
How to solve or which procedure?

Try to reflash and reset to factory settings.

СКАЧАТЬ Сервис мануал Sony KDL-40NX725 : Sony_KDL-40NX720_AZ2F.rar

KDL-65HX920 / HX923 / HX925
KDL-60NX720 / NX723 / NX725
KDL-55EX720 / EX721 / EX723 / EX725 / NX720 / NX723 / NX725 / HX820 / HX823 / HX825 / HX920 / HX923 / HX925
KDL-46CX520 / CX525 / EX520 / EX521 / EX524 / EX525 / EX720 / EX721 / EX723 / EX724 / EX725 / EX726 / EX727 / EX728 / EX729 / HX720 / HX723 / HX725 / NX720 / NX723 / NX725 / HX820 / HX823 / HX825 / HX920 / HX923 / HX925
KDL-40CX520 / CX521 / CX523 / CX525 / EX520 / EX521 / EX523 / EX524 / EX525 / EX720 / EX721 / EX723 / EX724 / EX725 / EX726 / EX727 / EX728 / EX729 / HX720 / HX723 / HX725 / NX720 / NX723 / NX725
KDL-37EX521 / EX524 / EX525 / EX720 / EX723 / EX725
KDL-32CX520 / CX521 / CX523 / CX525 / EX421 / EX425 / EX520 / EX521 / EX523 / EX524 / EX525 / EX720 / EX721 / EX723 / EX724 / EX725 / EX726 / EX727 / EX728 / EX729
KDL-26EX320 / EX321 / EX325
KDL-24EX320 / EX325
KDL-22EX320 / EX325

СКАЧАТЬ sony_tvupdate_2011_4027_eua_auth : sony_tvupdate_2011_4027_eua_auth.zip

The tv does not give me USB input option to update the tv. You only have the options according to the attached image

Software updates are made through the menu.