BMW F, G, and I-series vehicles require specific data files for ECU flashing, coding, and diagnostics. These files are known as PSDzData (Pack Service Data). Whether you are retrofitting a new instrument cluster, enabling hidden features, or updating vehicle modules, having the correct version of this database is mandatory.
Using an outdated PSDzData version with a newly updated vehicle will trigger errors, such as or missing CAFD (Configuration Auto Files Description) errors. Version 4.27.20 provides the precise mapping keys needed to unlock and read modules on vehicles manufactured or updated around its release window. Prerequisites for Installation
Make sure your car's ignition is fully turned on (engine off, dashboard lights active).
While the query focuses on version 4.27.20 (released around late 2020), it's important to note that as of April 2026 v.4.27.20 psdzdata lite download
For 99% of home users or indie shops performing coding (enabling Apple CarPlay, folding mirrors, changing start-up logos), Lite is sufficient. Only choose the Full version if you plan to flash firmware to modules or recover a completely dead ECU.
PSdZData_Lite_v.4.27.20.7z or .rar MD5 hash (common release): 9a4b2c1d3e5f6a7b8c9d0e1f2a3b4c5d (example – always verify your source) Directory structure after extraction:
Use a tool like 7-Zip or WinRAR to extract the downloaded v.4.27.20 archive. Placement: Move the extracted psdzdata folder into C:\Data . BMW F, G, and I-series vehicles require specific
Windows 10 or Windows 11 (64-bit recommended).
: Required exclusively for flashing (updating the firmware/software version) of vehicle ECUs.
Open E-Sys, click on Connect , and check if the "Target" selector is populated. If you see a list of vehicle codes (like S15A or F020), your installation was successful. Safety Tips for Coding Using an outdated PSDzData version with a newly
: Contains all necessary files for FDL Coding (feature activation) and VO Coding (option retrofitting). It excludes large SWFL (firmware) files, making it roughly 1–2 GB instead of 140+ GB. Full : Required only for flashing (updating ECU firmware). How to Acquire and Install
Before downloading and installing the database, ensure your workstation meets the following technical baseline:
Roger Bucknall MBE
Alex Reay
Paul Ferrie
Moira Bucknall
BMW F, G, and I-series vehicles require specific data files for ECU flashing, coding, and diagnostics. These files are known as PSDzData (Pack Service Data). Whether you are retrofitting a new instrument cluster, enabling hidden features, or updating vehicle modules, having the correct version of this database is mandatory.
Using an outdated PSDzData version with a newly updated vehicle will trigger errors, such as or missing CAFD (Configuration Auto Files Description) errors. Version 4.27.20 provides the precise mapping keys needed to unlock and read modules on vehicles manufactured or updated around its release window. Prerequisites for Installation
Make sure your car's ignition is fully turned on (engine off, dashboard lights active).
While the query focuses on version 4.27.20 (released around late 2020), it's important to note that as of April 2026
For 99% of home users or indie shops performing coding (enabling Apple CarPlay, folding mirrors, changing start-up logos), Lite is sufficient. Only choose the Full version if you plan to flash firmware to modules or recover a completely dead ECU.
PSdZData_Lite_v.4.27.20.7z or .rar MD5 hash (common release): 9a4b2c1d3e5f6a7b8c9d0e1f2a3b4c5d (example – always verify your source) Directory structure after extraction:
Use a tool like 7-Zip or WinRAR to extract the downloaded v.4.27.20 archive. Placement: Move the extracted psdzdata folder into C:\Data .
Windows 10 or Windows 11 (64-bit recommended).
: Required exclusively for flashing (updating the firmware/software version) of vehicle ECUs.
Open E-Sys, click on Connect , and check if the "Target" selector is populated. If you see a list of vehicle codes (like S15A or F020), your installation was successful. Safety Tips for Coding
: Contains all necessary files for FDL Coding (feature activation) and VO Coding (option retrofitting). It excludes large SWFL (firmware) files, making it roughly 1–2 GB instead of 140+ GB. Full : Required only for flashing (updating ECU firmware). How to Acquire and Install
Before downloading and installing the database, ensure your workstation meets the following technical baseline:
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