I have tried my Zenega CD1004is many times with Factory reset. BUt that goes to change only the LNB's Low and High frequencies, diseq switch yes or no and power to LNB yes or no. After factory reset you have to press red ok button to keep your settings for future. But after that the set will require tuning again which will be tuned to only dihnetwork tps. Factory reset never changes TP inputs.