Not sure what all that nonsense is about, but I ordered a Creality 4.2.7 from amazon back in September and had no problems at all installing and loading firmware. Just for reference here's the URL I ordered from https://smile.amazon.com/gp/product/B07V7S4NK7/ref=ppx_yo_dt_b_search_asin_title?ie=UTF8&th=1.

As you can see mine says "customised" but omits the "non standard matching phrase". I doubt it means anything, but hey, its from Amazon and you satisfaction is guarenteed. I bet it works fine