Some known issues and limitations with the Dell WD15 firmware include:
Updating your is critical for resolving connectivity issues, such as flickering monitors, erratic USB port behavior, or Ethernet drops. This docking station serves as a bridge for multiple peripherals, and keeping its internal software current ensures compatibility with the latest Windows updates and newer laptop models. Why Update Your Dell WD15 Firmware? Firmware updates for the WD15 typically provide:
: It is recommended to temporarily disable third-party antivirus software during the update. How to Update Dell WD15 Firmware Follow these steps to manually install the update: Driver Installation Guide for Dell Docking Station WD15
This is common with the WD15. If the tool refuses to flash, it might be because the dock's internal controller is in an odd state.

