E-Sys can flash and update the actual firmware (psdzdata) of individual modules or the entire car. This process changes the integration level (I-Step) of the vehicle, which can resolve software bugs, improve transmission shift logic, or prepare modules for newer map updates. Required Hardware and Prerequisites
: Never close the software or unplug the cable while a write sequence is active. Frequently Asked Questions Is E-Sys 3.36.2 free?
I-Step updates to keep vehicle software current for better stability and performance. Requirements for Installation