Digsi 4.90 Download Upd |link| -

Digsi 4.90 Download Upd |link| -

Digsi 4.90 Download UPD: The Ultimate Guide to the Latest Update for Siemens SIPROCESS & Siprotec Systems

Published by: PowerGrid Automation Insights
Reading Time: ~8 minutes

1. Executive Summary

This report analyzes the search query regarding "Digsi 4.90," specifically looking for a download source. The inclusion of "UPD" in the query typically indicates a search for an "Update" or a specific update package. Siemens DIGSI 4 is professional engineering software used for configuring Siemens SIPROTEC protection relays.

Key Finding: Siemens DIGSI 4 is not free software; it is a licensed professional product. A legitimate, direct public download of the full software suite (version 4.90) does not exist. However, Siemens does provide specific updates (Service Packs) and demo versions publicly. Unofficial sources claiming to offer the full software pose significant security risks.

Official Download and Update Sources

To obtain a legitimate copy of DIGSI 4.90 (either full version or as an update to an existing DIGSI 4 installation), you must use official Siemens channels: Digsi 4.90 Download UPD

  1. Siemens Industry Online Support (SIOS)

    • Go to support.industry.siemens.com
    • Search for “DIGSI 4” or the specific article ID (e.g., 109748187 for DIGSI 4.90 update)
    • Note: Downloads typically require a valid Siemens login (SID) and proof of a valid software license or service agreement.

  2. Siemens Service & Support Portal

    • For registered customers with a maintenance contract.
    • Updates can be found under “My Software” downloads.

  3. Siemens License Manager / WebKey

    • If you already have a DIGSI 4 license, you can occasionally request update files via the Siemens licensing portal.

Source 3: The "UPD" File (Patch)

If you already have DIGSI 4.87 or 4.88 installed, you may only need the UPD patch, which is a smaller file (approx 200-400 MB). Search for: "DIGSI 4.90 Update Service Pack" on SIOS.

Q4: Will DIGSI 4.90 run side-by-side with DIGSI 5?

A: Yes, absolutely. Install DIGSI 5 first, then DIGSI 4.90. They share no conflicting system files.

Step-by-Step Update Process (Legitimate)

If you have an existing licensed DIGSI 4 installation (e.g., 4.8x or 4.89): Digsi 4

  1. Backup your project database and device libraries.
  2. Uninstall any previous DIGSI 4 version (recommended by Siemens for major updates).
  3. Run the official DIGSI 4.90 setup executable from Siemens.
  4. Re-import your existing projects (they are usually forward-compatible).
  5. Re-activate the license via a connected dongle (USB hardware key) or software license file.

Issue 3: CFC editor shows blank white boxes.

  • Cause: Graphics scaling on high-DPI laptops.
  • Fix: Right-click DIGSI.exe > Properties > Compatibility > Change high DPI settings > Override high DPI scaling (Application).

Conclusion: Safe and Smart Update Strategy

The Digsi 4.90 download UPD is not just another patch—it is the last major evolution of a legendary engineering tool. By obtaining it legitimately from Siemens, verifying your system specs, and following the clean installation steps above, you ensure:

  • Reliable relay communication.
  • Compliance with grid codes.
  • Access to Siemens technical support.

Do not risk your substation’s integrity with counterfeit downloads. Use the official Siemens Industry Online Support, and always keep a backup of your working DIGSI environment.