If they advertise ability to record at 1080p and it's possible to push the hardware to 4K, that's not lying. This is not any different than an ISP selling a 10

If they advertise ability to record at 1080p and it's possible to push the hardware to 4K, that's not lying. This is not any different than an ISP selling a 10 Mbps plan when gigabit is available.