The THG3000’s firmware is a classic case of . While a few tweaks can unlock modest improvements, serious users should treat it as a dumb modem and invest in a third-party router. Always keep the THG3000 updated – but accept that true open-source firmware will never arrive for this platform.

The factory firmware on the THG3000 is a based on OpenWrt (legacy kernel 4.4). Key limitations include:

Do not attempt to flash unsigned firmware on an ISP-locked THG3000. If you want custom firmware, you must purchase a retail, unlocked router model.