V4.39.10_psdzdata.7z May 2026

: This complete package contains all the flash data (SWFL, IBAD, etc.) required to update vehicle software and flash new firmware to control modules. File Extension and Storage

When downloading files like v4.39.10_PSdZData.7z , users generally encounter two distinct packages: v4.39.10_PSdZData.7z

The .7z extension indicates that the archive was compressed using the 7-Zip utility. Because the "Full" version of this database can easily exceed 200 gigabytes, high-ratio compression is required to distribute the files over the internet. : This complete package contains all the flash

💡 If you run both E-Sys and ISTA on your machine, you can save massive amounts of hard drive space by placing the PSdZData files in your ISTA directory and creating a Windows symlink (shortcut) pointing to the E-Sys data folder. Important Safety Warning 💡 If you run both E-Sys and ISTA

PSDZDATA Lite/Full Space Saving Trick (Windows/MacBook M1/M2)