The update allowed users to store up to 100 custom Parameter ID (PID) lists, enabling faster setup for recurring diagnostic tasks. 21.4 Update Coverage Enhancements
Are there you need to perform? Do you have ShopStream Connect set up on a PC? Share public link
: Accurate OEM-specific codes prevent the misdiagnosis of complex electrical faults. snap-on solus ultra 21.4 update
The 21.4 software introduced a more helpful on-screen "No Communication" message, guiding technicians through troubleshooting steps when the scan tool couldn't connect to the vehicle.
For many technicians, the SOLUS Ultra was a reliable workhorse known for its fast boot-up times and intuitive interface. When the 21.4 update arrived, it wasn't just a routine patch; it was Snap-on's way of maximizing the hardware's potential one last time. The update allowed users to store up to
: Includes complete EVAP smoke and leak test capabilities.
Users can now save and manage up to 100 custom PID lists, allowing for easier, faster diagnostics on recurring vehicle types. 3. Expanded Vehicle Coverage (2025/2026 Focus) Share public link : Accurate OEM-specific codes prevent
Essential for modern European and domestic vehicles that alter charging profiles based on battery age. 3. Fast-Track Troubleshooter Integration
The update provided enhanced capabilities for servicing Tire Pressure Monitoring Systems and hybrid power systems.
While comprehensive release notes for the 21.4 update are not widely available, a deep dive into surviving documentation, such as an official "What's New for 21.4" guide for the Australian market, reveals the substantial level of detail and specific improvements this update provided. The guide included new coverage and expanded capabilities for many vehicle systems, making this a substantial upgrade.
: The Solus Ultra cannot connect to newer vehicles using LAN/LIN OBD communication protocols (e.g., Volvo models from 2017/2018 onwards), and hardware updates like new cables do not resolve this limitation. How to Install Updates