Snap-on has confirmed that 21.4 includes patches for (Common Vulnerabilities and Exposures) related to Bluetooth pairing and diagnostic session hijacking, identified in Q1 2026 by third-party researchers. No active exploits have been reported in the field.
Vehicle-specific coverage for over 50 manufacturers, including extensive European, Asian, and Domestic makes. Why Update to 21.4? 1. Increased Diagnostic Speed
Once the download finishes, safely disconnect the tool from your PC. Restart the SOLUS Ultra. The tool will automatically detect the new software files on the SD card and run the installation wizard. Do not power off the tool during this process. Troubleshooting Common 21.4 Update Issues
The 21.4 update focuses on streamlining repairs through exclusive Snap-on data and cloud integration: SOLUS Ultra™ Scan Tool | Snap-on Tools snap-on solus ultra 21.4 update
: Quick access to hundreds of on-tool CTM classes, now found at the top of the Guided Component Test menu. Expanded PID Lists
: Newer communication protocols like Diagnostics over IP (DoIP) and CAN with Flexible Data-Rate (CAN FD) are generally not supported by this hardware. Discontinued Support
You won't have to borrow a colleague's newer scanner when a 2019 or 2020 vehicle rolls into your bay. Snap-on has confirmed that 21
software for management and updates. To check for or install this release: Download ShopStream Connect : Install the latest version on your PC. Connect Your Tool : Use a USB cable to connect the SOLUS Ultra to your computer Check for Updates
The Snap-on Solus Ultra is known for its "no baggage" approach, offering a full range of scan tool functions—fast boot-ups, OEM-specific coverage, and high-resolution data graphing—without the complexity of specialized personality keys. It is a dedicated, ruggedized tool that brings dealership-level diagnostics to the independent shop. Key Features of the 21.4 Update
Click the button next to the 21.4 update in ShopStream Connect. Why Update to 21
Select the 21.4 software bundle, purchase/verify your license code, and follow the on-screen prompts to download the update directly to the tool’s MicroSD card. Method 2: Through Your Snap-on Franchisee
Added over 88,000 new component tests , including significant increases for hybrid electronics and Mercedes-Benz HVAC systems.
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