Hi guys!

I have a pre facelifted car (W204) with Audio 50 with Navi, and have 3.5 mm Jack in the glove box.

First, i want upgrade to COMAND NTG4, i want to buy used monitor, vents, and head unit. Do I need any other accessories, cables? Will it works whitout coding, like plug and play? If i don't have (or need) the original GPS with this changing, will it cause some trouble?

Second, i want buy CarPlay module, i find the JoyeAuto modul, and Kremer Sino iSmart modul. Question is: what is the difference between these two products besides the price? Has it quality difference? Also this product use 3.5 mm jack in the glove box, or can i directly wiring to the headunit? Because with Audio 50, my AUX is sounds quiet. I know, there is a FW upgrade, but i need that upgrade in NTG4 too?

Thanks for the answer, and sorry for my English