Razer BlackWidow V4 Low-profile Tenkeyless HyperSpeed Firmware Updater | RZ03-0545

Updated: 03-Mar-2026 | Answer ID: 20293
This is a guide showing the latest version of the Razer BlackWidow V4 Low-profile Tenkeyless HyperSpeed firmware and steps to install it successfully.

Applicable Models:

Firmware updater v1.4.1_r2

  • https://rzr.to/a7zbst | March 4, 2026

  • Fixed key spamming that occurred when users pressed Win + L.

  • Fixed the issue where the keyboard could not wake from sleep by scrolling or pressing the volume roller in Bluetooth mode.

  • Fixed missing keystrokes and key sticking issues when pairing the keyboard with a gaming mouse.

  • Fixed other common bugs.

Step-by-step Process

  1. If using a laptop, ensure it is plugged into a wall outlet. Do not let it run on battery alone.
  2. Save all files and close all programs.
  3. Download the latest firmware.

  1. Run the updater.
  2. Click "Yes" if the User Account Control window pops up to proceed.
  3. Click "NEXT" to proceed. The updater will close all running Razer applications.
  4. Select the device you want to update.
  5. Plug in the wireless USB dongle to PC then click "UPDATE".
  6. Wait until the update process is complete. Do not interrupt.
  7. Click "NEXT".
  8. Connect the device to PC using the supplied USB cable.
  9. Click "UPDATE".
  10. Wait until the update process is complete. Do not interrupt.
  11. Click "NEXT".
  12. Click "CLOSE" once the update is complete.

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