Digsi 4.90 Download Upd May 2026
If you cannot access the official Siemens portal (no contract, expired license), you have two legal options:
Do not use cracked versions. Besides legal and malware risks, cracked versions of DIGSI 4.90 often have broken IEC 61850 libraries, leading to relay misoperation.
Do not confuse DIGSI 4.90 with DIGSI 5. They are different platforms:
Warning: Installing DIGSI 4.90 over DIGSI 5 is safe (they co-exist), but you cannot use DIGSI 4.90 to program a SIPROTEC 5 device.
Summary: DIGSI 4.90 is a legitimate Siemens update for SIPROTEC 4 engineering. It is not publicly downloadable. To acquire it, you need an existing license and access to the Siemens Industry Online Support portal. Avoid unauthorized download sites for security and compliance reasons.
Siemens DIGSI 4.90 is a legacy engineering software used to configure and manage SIPROTEC protection relays. While once the standard, it has largely been superseded by newer versions like 4.95 and 4.96, which offer better stability and wider operating system compatibility. Key Review Points for DIGSI 4.90
Primary Pitfall (GOOSE Communications): One of the most significant documented issues with version 4.90 is a "pitfall" regarding GOOSE subscription in IEC 61850 configurations. Engineers have reported critical errors that often require manual inspection of the SCD file to resolve, potentially leading to wasted configuration time.
Operating System Compatibility: Users often face challenges installing version 4.90 on modern systems like Windows 10 Pro, where driver installation frequently fails. Version 4.92 and higher are generally required for stable performance on newer Windows environments.
Device Driver Integration: Version 4.90 requires manual installation of device-specific drivers to communicate with various relay types (e.g., 7SD or 7SJ series). Without these drivers, the device catalog remains empty. Downloading and Updating
If you specifically need version 4.90 for legacy project compatibility:
Official Source: It is highly recommended to download only from the Siemens Industry Support Portal to avoid unlicensed or compromised software.
Trial Period: Official Siemens downloads typically offer a 30-day trial version. After this, a permanent license key is required for continued use.
Update Path: Version 4.90 was frequently used as an intermediate update from version 4.84. However, Siemens strongly advises moving to the latest version, such as 4.96, which includes all cumulative hotfixes and the most recent device drivers. Digsi 4.90 Download UPD
What is Digsi 4.90?
Digsi 4.90 is a software tool used for configuring and parameterizing SIPROTEC and other protection devices from Siemens. It's a popular tool among electrical engineers and technicians working with power systems protection and control.
Key Features of Digsi 4.90
Some of the key features of Digsi 4.90 include:
Downloading Digsi 4.90
To download Digsi 4.90, you can follow these steps:
System Requirements for Digsi 4.90
Before installing Digsi 4.90, ensure your system meets the following requirements:
Installation and Activation
After downloading the software package, follow these steps:
UPD Update Information
If you're looking for updates or patches for Digsi 4.90, you can check the Siemens website for available updates. Typically, updates are provided to fix bugs, add new features, or improve compatibility with other software or hardware. If you cannot access the official Siemens portal
Conclusion
Digsi 4.90 is a powerful tool for configuring and parameterizing protection devices from Siemens. By following the steps outlined above, you should be able to download and install the software successfully. If you encounter any issues during the download or installation process, feel free to reach out to Siemens support for assistance.
Additional Resources
For more information on Digsi 4.90, you can consult the following resources:
DIGSI 4.90 is a legacy version of the Siemens configuration software for SIPROTEC 4 protection devices. While 4.90 is no longer the current release, Siemens provides full versions and service packs for newer iterations (up to V5.00) that maintain compatibility and include modern drivers. Official Download and Installation
The most reliable way to obtain DIGSI 4 is through the Siemens SiePortal (formerly Industry Online Support). Although version 4.90 specifically may be archived, the latest stable versions like DIGSI 4 V4.96 or DIGSI 4 V5.00 are available as full downloads.
Trial Version: These downloads typically function as a 30-day trial without a license key.
Full Installation: Requires a valid serial number found on your product card.
Device Drivers: Recent full version downloads (like V4.94 SP1 and newer) include all released DIGSI 4 device drivers in the installation package. Key Installation Tips
OS Compatibility: Version 4.90 and later may show warnings on older systems like Windows XP; modern versions are optimized for Windows 7 and Windows 10.
Prerequisites: For Windows 10 users, you must manually install .NET Framework V3.5 before installing DIGSI 4 (specifically for V4.94 SP1 and newer) to ensure IEC 61850 devices open correctly.
Update Path: If you are updating from an older version (e.g., v4.84), you may need to manually uninstall the old version before running the new installer, as "over-the-top" updates sometimes fail. Do not use cracked versions
Driver Sequence: When installing specific relay drivers (like the 7SJ80XX), it is often recommended to install older driver versions before the latest ones to avoid installation bugs. Technical Resources
For detailed manuals and product information, you can access the DIGSI 4 Product Information PDF directly from Siemens.
DIGSI 4.90 is a legacy engineering software used to configure, commission, and operate SIPROTEC 4 protection relays
in industrial and energy distribution systems. While version 4.90 is still in use, Siemens has since released newer versions, including
, which offer broader compatibility with modern operating systems and newer device drivers. Download Options Official downloads are available through the Siemens Industry Online Support (SIOS)
portal. Users typically must register for a free account to access the installation files. Trial Version : The full software can be downloaded and used as a 30-day trial
without functional restrictions by entering "Trial" as the serial number during setup. Full Version
: Requires a valid license key for permanent use after the trial period ends. Latest Stable Versions DIGSI 4 V5.00 Full Version (released April 2025). DIGSI 4 V4.96 Full Version (released April 2023). Key Features
Report: Analysis of the Search Query "Digsi 4.90 Download UPD"
Date: October 26, 2023 Subject: Investigation into Software Availability and Security Implications
Digsi 4 is renowned for its user-friendly interface, which simplifies the often complex task of setting up protection relays. Version 4.90 represents a significant milestone in the software's lifecycle. It bridges the gap between older hardware and modern Windows operating systems, offering improved stability over earlier versions like 4.80 or 4.86.
Whether you are dealing with SIPROTEC 4 (7SJ, 7UT, 7SD series) or SIPROTEC Compact, version 4.90 is often the "sweet spot" for engineers who want modern functionality without the steep learning curve of the newer Digsi 5 or Digsi SiNERGY platforms.
The "UPD" (Update) from version 4.83 or 4.87 to 4.90 includes:
Contact your local Siemens Energy or Digital Grid sales representative. They can provide a trial license or guide you to a renewable "Software Service Support (SSS)" agreement. Without legal entitlement, the Digsi 4.90 download UPD will be unusable (it will operate in demo mode, blocking device communication).