Digsi | 4.90 Download Upd |best|

Extract the downloaded file and install specific device drivers matching the MLFB part number of your SIPROTEC relay.

After downloading the software package, follow these steps:

DIGSI 4.90 requires the corresponding device drivers to recognize your specific relay hardware. Open the . Select Import Device Drivers . Digsi 4.90 Download UPD

Navigate directly to the official Siemens Software Download Section.

Ensure your hardware and operating system meet these specifications before installing the software: Extract the downloaded file and install specific device

Adjust, calibrate, and send configuration settings to digital protection relays.

If a specific relay model does not appear in your project tree, download and install the latest device update package (VDM) from Siemens. Select Import Device Drivers

Follow the prompts to install either the full software package or specific device drivers. DIGSI 4 - Software for SIPROTEC 4 - SiePortal

was a milestone release that unified configuration, commissioning and operation of all SIPROTEC protection relays. While you can no longer download version 4.90 as a standalone package, you can still obtain the latest DIGSI 4 release (e.g., 4.91, 4.92, 4.93 or 4.94) through official Siemens channels. By following the installation guidelines and paying attention to system compatibility, you can continue to maintain and engineer SIPROTEC 4 devices reliably on modern Windows computers.