420E incorrectly upgraded to 1.4.1819 and is no longer functioning correctly

I don't know why the AP pulled a non GA version of the firmware, but I need the official 1.4.1748 firmware download so I can manually install.  Anyone know where this download page would be?

Thanks in advance,


Added TAGs
[edited by: Erick Jan at 1:04 AM (GMT -7) on 13 Jun 2024]