Reset and installed an old Fire TV Stick 1st gen on a relatives dabba TV yesterday. Took 3-4 updates and is working very good, just a bit slower than 2nd and 3rd generation versions but evident only if you have used the newer fire tv devices. Even the Live TV section came after 3rd update. Wondering if the new UI will come to this device as well.
A little history of the device - It came as a gift from one of my relatives in US when Amazon and Fire TV were not even present in India. Used it for 2 years then moved on to Fire TV Stick 4K