Zyxel NBG6817 not pingable after flashing

[frollic]

could also try zycast, @bmork suspects it works on other devices too

Method to flash any NR7101

Great news! I believe we have a method to flash any NR7101 without knowing any password. I finally took the time to decompile their closed source part of the bootloader to reverse engineer the "Multiboot" feature you might bave noticed on the console while booting these devices. This is a protocol allowing direct flashing using multicast. With absolutely no authentication at all... My initial work-in-progress code with protocol docs is here: https://github.com/bmork/firmware-utils/commit/dd4…