A:AnswerThe model with C is for Canada and the model with U is for the United States of America. The part number for the Canada replacement remote is Part #: 1T86000007I you can purchase it from reliableparts.ca
Or you can use the replacement remote model NS-RCFNA-21 available at Best Buy.
A:AnswerIMO the only way is to get a better TV. Sorry to be blunt but any Fire TV just does not cut it when it comes to anything TBH. Try a Vizio if price is a issue if not LG or Sony i've owned all 3 and i'm a big time gamer Sony has been the best by far but also cost more than the others but the lowest line Vizio has a good pic and has a good game mode i have this 40'' for my gaming PC https://www.bestbuy.com/site/vizio-40-class-v-series-led-4k-uhd-smartcast-tv/6444704.p?skuId=6444704 and a 65'' Sony for all the consoles i own.
A:AnswerTry this, press and hold at the same time the DPAD-left, Back (↩) and Menu (≡) buttons for at least 12 seconds. To pair the remote again, press the Home button for up to a minute.
A:AnswerYou could try to reset the remote by pressing Return+Left+Option for more than 12s. To pair the remote again press and hold the Home button for about a minute. For product support, please call 1 (855) 527-2411 available from 8 am to 9 pm CT everyday.