LG TV remotes backwards compatible?

lexexpress

I have an LG OLED55b7v TV (the 2017 model) that needs a new remote control. Do I need the remote specific to the 2017 model (the AN-MR650A) or can I get one for the later models (the AN-MR18BA or AN-MR19BA)? I'm asking since the latter are easier and cheaper to come by. Thanks in advance for any answers.