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Sony WF-1000XM4 firmware update, version 2.0.0

Sony WF-1000XM4 multipoint firmware update

Sony has finally released the Multipoint firmware update for the Sony WF-1000XM4. The version is now 2.0.0 and has been released in all regions, unlike 1.6.1.

This new firmware includes the battery drain fix in 1.6.1 and the unknown changes in 1.5.0. Comparing to older firmware updates, I cannot seem to identify what was changed in 1.5.0, perhaps someone from Sony could leave a comment down below. Here are all the previous included changes:

  • Reduces the burden on the battery
  • Reduces the loss of battery capacity due to long-term use
  • Improves the stability of music playback
  • Improves call voice quality
  • Improves general performance
  • Improves the stability of Bluetooth connection and music playback
  • Enhances other functions to improve general performance
  • Improves Bluetooth connection stability
  • Fixes an issue where the Noise Canceling function or Ambient Sound Mode is momentarily
  • interrupted
  • Improves other functions

As always, I would say wait and see what others on Reddit say before upgrading.

Check the main post on Reddit and drop your update thoughts there.


  1. It's about time

  2. Nice ๐Ÿ˜

  3. Welp, hopefully now when my new batteries arrive I'll get more than. 1 year before they are dead. Ever since 1.6.1 I've had 45mins battery life.

  4. An interesting thing is that starting with this 2.0.0 version, there are 3 different firmware files. There is one labeled "chinese" for devices intended for the Chinese market, one labeled "japanese" for the Japanese market, and one labeled "english" for the rest of the markets. This could open the possibility of getting a slightly different sound with each variant.

    English variant: 3.64 MB
    Chinese variant: 3.65 MB
    Japanese variant: 3.77 MB

    I just forced an update to the Japanese firmware (having EU buds) and it worked, but I didn't use the buds in quite some time since I got the WH1000XM5, so I can't exactly analyze sound differences. Forcing the update meant for Japanese devices changed the voice to Japanese, even though in the Headphones app it was still showing it as English. The language can be changed though, but you'll have to change it to something like French first, then back to English. It seems that when you change the language, it actually downloads a voice pack as a separate kind of firmware update, and then that pack is installed.

  5. I just updated to 2.0.0 and now the charge reads 100% on both buds and doesn't change. When I put them in the case the light is always green. I tried running the proxy app to downgrade and it says I need to upgrade to the latest app for these buds. Lol. I'm screwed until a new version comes out.

    1. Download the latest app that works with MDR Proxy from my blog.

    2. Worked like a charm. Thank you!

    3. Did you downgrade, or did you upgrade via the MDR proxy? Got the same problem with the 100% batterystatus

    4. I upgraded to 2.0 normally and got the 100% all the time. I downgraded to 1.6.1 with the proxy app. It worked, but every time I touched the button to skip songs etc... it would say "bluetooth device 2 replaced." I downgraded to 1.4.2 to see if it would go away, but it didn't. From there I upgraded normally to 2.0 and it started reading the right levels.

  6. Just updated to 2.0 and noticed The bass lost it's punch, it doesn't sound like natural bass at it was. I'll try to reset and reanalize my ear to get a better natural sound.

  7. The update seems to break apps like spotify and YouTube on a galaxy s22 ultra. When two devices are connected, the apps play for about 2 seconds and then pause.

    1. I've got the same issue. Few Similar reports on Reddit.


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