Name of the channel: TCM US (Turner Classic Movies)
Country: USA
Kind of channel: Cinema/Classic Films
Lyngsat Link: https://www.lyngsat.com/tvchannels/us/TCM-US.html
It's a shame we don't have this channel already. It probably has the best programming of any American film channel. TCM UK just...
Name of the channel: TCM US (Turner Classic Movies)
Country: USA
Kind of channel: Cinema/Classic Films
Lyngsat Link: https://www.lyngsat.com/tvchannels/us/TCM-US.html
Alright, I fixed it :D
For everyone suffering from the "wrong signature" problem, pull the cable, press the menu button, put in the cable, hold it until it enters BIOS, then update from the USB through the recovery/BIOS screen. It'll work then.