Download WD My Cloud PR4100 Network Attached Storage Firmware Update 2.21.119

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To start downloading WD My Cloud PR4100 Network Attached Storage Firmware Update 2.21.119, please choose one of the links from the list below.

  1. WD My Cloud PR4100 Firmware Update 2.21.119: My_Cloud_PR4100_2.21.119.bin

Manually Updating the firmware on your My Cloud PR4100

Important: Make sure you stop all processes and save all your data before performing the firmware update.

Note: My Cloud devices require a hard drive inserted into the bay and a volume must be created to perform the firmware update.
Do not interrupt the firmware upgrade process. Doing so may cause the device to malfunction or unable to boot.
If you are using the manual update method, do not rename the firmware file. Doing so will cause the manual update to fail and can corrupt the system.

Updating the firmware on your My Cloud PR4100

  1. Download the firmware to your desktop.
  2. Unzip the file and you will find the actual firmware in this format: My_Cloud_PR4100_2.21.119.bin
  3. Save this to your desktop.
  4. Open the My Cloud PR2100 Dashboard UI.
  5. Go to Settings >> Firmware Update.
  6. Under the section Manual Update, click the Update From File button and a window will open.
  7. Browse to where you saved the My_Cloud_PR4100_2.21.119.bin file and select it.
  8. You will see a pop up confirming to upgrade your firmware, click Ok.

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If you have found mistakes during downloading, please email to We will endeavour to solve these as soon as possible. Other problems, please try to contact publisher's official support.

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