BT Youview Remote & Hitachi 40HXT16U
Just incase anyone has an issue like this and can’t find anything on the internet to resolve and ends up pulling their hair out like me, the code to use for this TV is the one for Sharp not Hitatchi which was 4848… no idea why, finally figured out to try it by googling the code from the bottom of the TV remote and it came up as a Sharp remote.