Glad to see that license issue got resolved pretty quickly! Some people just have no scruples and will take advantage of any situation to make a quick buck. Same sort of thing happened with Dahua IP cameras that were made for the China market. Those are a LOT cheaper than ones made for international markets but people got on Aliexpress and bought them anyways. A few have figured out to hack the firmware in them by locating a set of TTL serial points on the board inside them. So they posted instructions on how to mod the firmware to swap the language files to English. Works great but there is still an issue, if you ever attempt to update the firmware it bricks the camera and the newer NVR and camera firmware have additional protections built in to block China market devices. Did not matter though - chinese sellers started buying the China market cameras in bulk, using the instructions, hacking the firmware and then flooding them onto unsuspecting buyers on eBay and Amazon. After tons of complaints most do at least now put in a tiny disclaimer not to every try to update the firmware to fix issues, improve security, and add features.
Also interesting info on the 6610 power supplies. I'd bid on the two I linked yesterday some seller has on eBay but those are the 1000w ones for the POE models. Would probably work just fine in my non-poe 6610 but they are really extreme overkill for a non-poe model. But that makes me also wonder - is there any different circuitry inside that differentiates the non-poe models from the poe models? Could it just be that the non-poe models do not have sufficient power supplies? All of the poe commands are in there since they use the same firmware. I'd also venture to guess that in practice the poe power supplies would not really draw much, if any, more power than a non-poe model if no poe capabilities are being utilized. Most modern power supplies only draw what is being pulled from their load. As an example, my Dell T7910 workstation has a 1300w power supply but at idle it only draws maybe 150w. If I have some heavy processing tasks going that use all 24 cores the power draw goes up accordingly.