@kunix
I've used it on a 3790 [virgin, never converted previously to 3490]. Functions as a 3490. Identifies as a 3790 on boot. GarminDevice.xml and inventory page show HWID as 1101 so i suppose WebUpdater etc for 34x0 updates is a nono. Logo jumps up and to the right on boot and then disappears when loading maps. Only did the conversion as few minutes ago. I'll take it for a real world road test later and let you know the sat accuracy.