Purchased new T25. Using successfully with Optimum internet. Trying to log in to modem (to change DNS). Does not open welcome page to change admin credentials. Goes directly to status page. Holding reset button for 20+ seconds did power cycle only??? software version 11.02.142, so not “after 11.02*****” which supposedly restores factory settings with held reset button.
How do I restore factory settings and set up credentials?