The package is a foundational requirement for BMW F, G, and I-series coding. This guide provides a verified walk-through to ensure your v4.27.20 PSdZData Lite download works seamlessly with E-Sys .
Unlike the massive "Full" version—which includes heavy SWFL firmware flashing files—the Lite version strips out the flashing data. This reduces the download size to roughly 2GB while keeping 100% of the core data required for routine coding functions.
Contains flash firmware files ( SWFL ) required to update module software versions. This package requires up to several hundred gigabytes of storage space.
A common reason for the "Target" list appearing empty in E-Sys is missing placeholder folders. Check each chassis folder within C:\Data\psdzdata\mainseries\ Each of these must contain an empty folder named v42720 psdzdata lite download work
Ensure the structure looks like this: C:\Data\psdzdata\data\... C:\Data\psdzdata\swe\... Do not nest it inside an extra folder. Step 4: Verify and Use Open E-Sys . Connect to your car using an ENET Cable .
| Feature | PSdZData Lite | PSdZData Full | | :--- | :--- | :--- | | | Coding (FDL & VO coding) | ECU firmware flashing & programming | | File Size | ~1–2.5 GB | 80–200+ GB | | Includes SWFL Files? | No | Yes | | Best For | Enabling hidden features, personalizing vehicle settings | Updating ECUs, module replacements, custom firmware | | Disk Space Needed | Minimal | Significant |
To test your newly configured database, connect your vehicle to your workstation using an RJ45-to-OBDII ENET cable. The package is a foundational requirement for BMW
PsdZData (Programmier Systemdaten, or Programming System Data) is the database that contains all the firmware, CADF (Coding Data File), and SWE (Software Entry) files for BMW vehicles. The number (often written as v42720) refers to a specific software version released in late 2022/early 2023.
: Version 3.30.1 or newer is generally recommended for compatibility with this data set. 2. Installation Guide
. The software will reference the PSdZData to read the car's current configuration and allow you to "FDL Code" specific features. Importance of Using Current Versions The version number (v42720) corresponds to a specific This reduces the download size to roughly 2GB
For your to work, it must match your car's firmware. In 2026, it is highly recommended to seek newer PSdZData Lite versions (4.50+) from Bimmerpost and place them correctly in C:\Data\psdzdata .
E-Sys and PSdZData Installation Guide | PDF | Ip Address - Scribd
Licensing and legality
: With the Lite version, you can enable Apple CarPlay, disable auto Start/Stop, or register new components like LED headlights. Where to Download v.4.27.20