Assume I buy an unlocked router now, and using it together with some ISP xyz (their connecting type is iPoE). After some months I go back to have TPG service. Will the unlocked router usually work...

@terziyski Sorry I am not that technical. Does it mean the wifi router is only useful for returning customers of TPG? There is no simple ways to unlock it, right? I also find these firmware version...

This is a Archer VR1600v. I do not know what I have missed. I cannot select the same from the drop-down menu. Firmware Version: 0.1.0 0.9.1 v5006.0 Build 200810 Rel.53181n Hardware Version: Archer...