Originally Posted by li21
Do you mean fitting non adaptive headlight will be easier?
Will it need new wiring harness + control units when going into non-xenon X1?
I mean replacing the entire assembly with a xenon assembly (non-adaptive). It might be a bit expensive, but it's better than tearing apart your existing assembly and replacing the coronas.
I'm not sure if it'll need a new wiring harness and/or LCM, but it will likely need a new software flash. Any competent shop should be able to do this for you. I replaced my pre-LCI E92 taillight assemblies with LCI E92 taillights, and I did need a new harness (BMW part) and a flash, which I got from a non-BMW shop (EAS).