However, the software is . As BMW moves to secure coding (S-Gateway 2, 3) and cloud-authenticated flashing, ESYS Plus 4.0.2 is increasingly legacy. New users should consider modern successors like BimmerUtility for reliability, but for the vintage BMW enthusiast or budget-conscious coder, ESYS Plus 4.0.2 on a Windows 10 laptop with an ENET cable is still a golden ticket.
User case: Coding anti-dazzle high beams on a G20 330i. Stock ESYS: 3 connection attempts, 1 CAFD error, 2 restarts. ESYS Plus 4.0.2: Connected first time → CAFD present → FDL coded in 4 minutes. esys plus 4.0.2