Firmware update: Sony WH-1000XM4 2.5.0

Sony has released new firmware for its 254 gram WH-1000XM4 headphones with 2.5.0 as the version number. This is an over-ear model where the noise cancellation is provided by the HD Noise Canceling Processor QN1. There are also two 40mm drivers and a USB-C connection. The latter has a Quick Charging function that allows the headphones to be used wirelessly for five hours after charging for ten minutes. The changes in this release are as follows:

Firmware Update to Version 2.5.0

Benefits and Improvements

  • Improves Bluetooth connection stability
  • Improves the hands-free calling quality

Previous Benefits and Improvements

The following benefits and improvements are also included in this update.

  • Fixes an issue where the headphones cannot be paired on a Windows computer
  • Fixes an issue where, when there are 2 Bluetooth devices connected at the same time, the connected devices repeatedly disconnect and reconnect
  • Improves general performance of the headphones

Version number2.5.0
Release statusFinal
Operating systemsAndroid, iOS
License typeFreeware