: Open Device Manager , find the VCI under "Ports (COM & LPT)", and manually update the driver by pointing to the Driver folder within your Delphi installation directory.
Firmware update issues with the Delphi DS100E (and its successor, the DS150E) typically occur during the synchronization between the diagnostic software and the Vehicle Communication Interface (VCI). These problems often manifest as the device flashing red, "No VCI Found" errors, or the update process getting stuck Common Causes of Update Failure Power Supply Interruptions delphi+ds100e+firmware+update+problem+top
: Attempting to force a version (e.g., v1622) that does not match the specific board revision (Single Board vs. Double Board). Step-by-Step Troubleshooting Guide : Open Device Manager , find the VCI
: For "bricked" units that won't respond, experts sometimes open the case and short MCU STM32 legs 108 and 138 to force the device into Boot Mode. This allows for a fresh flash using the Flash Loader Demonstrator tool . Double Board)
If your update has already failed or is stuck, follow these steps to reset the communication: Open Device Manager on your PC.
Users who bought their DS100E second-hand or from a grey-market distributor find that the device’s serial number is flagged. The update proceeds to 50%, then fails with “Subscription Mismatch.” The machine is now neither on the old firmware nor the new one. It’s stuck in “maintenance mode.”
You need to force the bootloader to re-engage.