: Use a blank USB drive (ideally 8GB or smaller) formatted to FAT32 .
The Roadtop CarPlay update is a for older premium cars (2010–2016). It works, adds wireless CarPlay, and preserves original functions. But it’s not perfect — expect slight lag, occasional glitches, and a frustrating manual. If you’re patient and handy, it’s a 8/10 value. If not, buy a Bimmertech or just use a phone mount. roadtop carplay update
This is the trickiest part. Roadtop does not maintain a centralized, public update server. Instead, they distribute updates via: : Use a blank USB drive (ideally 8GB