BMW changed the security architecture in 2019. E-Sys requires constant updates to launcher tokens. Bimmer Utility sidesteps this with a direct hardware read. It is simply faster and safer for modern cars.
As BMW moves further into the G-series and beyond (Neue Klasse EVs), the old E-Sys architecture will die. Bimmer Utility’s modern codebase ensures it will adapt faster. bimmer utility vs esys ultra full