New Release - WD My Cloud Firmware Release 4.01.03-421 (2/23/15)

WD is pleased to announce the update release of My Cloud Firmware Release 4.01.03-421.

  • Please follow the instructions when doing the update.

Please feel free to post your questions and experiences in the WD My Cloud forum.


Before updating to the latest firmware, it is recommended that you’ve installed the most recent updates and service pack on your computer.

  • For Windows ® , go to the Start menu and select Windows Update
  • For Mac ® , go to the Apple ® menu and select Software Update

Resolved Issues:

  • Resolved issue of Apple Time Machine® performance degradation