If your update was interrupted and the device now only shows a solid red light (instead of flashing blue/green), it is soft-bricked. To recover it, restart your PC, keep the 12V external power connected, open the software, go straight to Hardware Setup, and click Update again. The bootloader is designed to listen for a flash command even if the main firmware is corrupted.
Select or manually choose the matching COM Port . Click Test . delphi ds100e firmware update problem link
to ensure you have the latest compatible version (currently up to DS 2025.05 If your update was interrupted and the device
: Failure to update can leave critical control units like ABS or BCM unreachable. Standard Troubleshooting Steps Verify Physical Connections Select or manually choose the matching COM Port
Manually browse to the Drivers folder within your Delphi software installation directory to reinstall the correct USB serial port drivers. In the Delphi software, go to Settings > Hardware Setup .
The Delphi DS100E is a popular choice among independent mechanics and DIY automotive enthusiasts for its balance of functionality and affordability. However, a recurring headache for users is the firmware update process, specifically an error where the software claims it cannot find the update file or generates a "bad link" error during the firmware flash.
A vast number of DS100E units in circulation are high-quality clones. These units often require specific, hacked driver files to communicate with the PC suite. If you update the main software suite to a version newer than what the cloned hardware supports, the software will try to fetch official firmware that is incompatible with the clone's architecture, resulting in a failed link.