The release v42720 is a milestone for BMW modifications. It bridges the gap between older F-series chassis and the new G-series electrical architecture. By installing the Lite version, you save 70+ GB of hard drive space while retaining full coding capability for features like disabling ASD (Active Sound Design), enabling Euro MDM mode, or activating video in motion for iDrive 7.
Remember the golden rules:
With this guide, you should now be able to confidently execute a v42720 psdzdata lite download install and get back to diagnosing and customizing BMWs efficiently.
Disclaimer: PSdZData and E-Sys are diagnostic tools intended for professional use. Modifying vehicle software may void warranties or cause system malfunctions. Always back up your original coding data before making changes.
PSDZData is the container for the actual firmware and diagnostic data used by ISTA+. The Full version of PSDZData typically ranges between 60GB to over 100GB. It contains every single firmware file for every BMW model and ECU produced up to that date. v42720 psdzdata lite download install
The Lite version is a stripped-down variant. It removes the heavy firmware binaries (the actual code flashed onto the car's ECUs) used for programming (SWE/FA). By removing these, the file size is drastically reduced—often to around 3GB to 5GB.
Why use the Lite version?
Note: While the Lite version allows you to see diagnostic data for newer cars, you generally cannot perform full programming updates on a car that requires data not present in your local database.
E-Sys does not automatically "see" new PSdZData. You must map it. The release v42720 is a milestone for BMW modifications
By default, E-Sys installs to:
C:\EC-Apps\ESG\E-Sys\
Inside, there is a folder named psdzdata (existing, possibly from an older version).
⚠️ Warning: Many “free” downloads contain malware. Always scan with Windows Defender + Malwarebytes. Check the file hash against known community posts. With this guide, you should now be able
Unlike official software, PSDZData is a database maintained by the community. You will not find this on the BMW official website.
Tip: Always download the latest version if available, but ensure your ISTA+ version is compatible with the PSDZData version. Generally, newer ISTA+ versions can read older PSDZData, but older ISTA+ versions may struggle with brand new PSDZData structures.
To ensure v42720 is active: