How to flash AC1900 to AC68U Posted on July 31, 2018 by Angel Reply Flashing TM-AC1900 to RT-AC68U/P Click to share on Facebook (Opens in new window)Click to share on Twitter (Opens in new window)Click to email a link to a friend (Opens in new window)Click to print (Opens in new window)MoreClick to share on Reddit (Opens in new window)Click to share on LinkedIn (Opens in new window)