A: A flash takes 45+ minutes. If your car voltage drops below 12V mid-write, the ECU enters a boot loop that requires dealership recovery.
: E-Sys requires a separate "PSdZData" library to communicate with the car. For version 3.40, users typically pair it with Third-Party Bundles : Commercial tools like BimmerUtility Esys 3.40 Download
Do NOT use random torrent sites or file-hosting pop-up ad farms. Instead, look for: A: A flash takes 45+ minutes
Install PSDZData