Sony WF-1000XM4 Earbud Repairs – Battery Replacement, Firmware Updates & More

Is your Sony WF-1000XM4 earbud battery draining too quickly? Lost an earbud or facing firmware issues? At CPRepairsLab.com.au, we specialize in repairing and restoring your Sony WF-1000XM4 earbuds to their full potential. Whether you need a battery replacement, a missing earbud replacement, or help with firmware updates, we’ve got you covered!

Fun Facts About Sony WF-1000XM4 Battery Life

Did you know the Sony WF-1000XM4 earbuds are designed for long-lasting performance? Here’s how their battery life stacks up:

  • With ANC (Active Noise Cancellation):
    Up to 8 hours of playtime on a single charge.
    Total playtime with the charging case: 24 hours.
  • With Ambient Sound Mode:
    Up to 8 hours of playtime (similar to ANC, as it uses microphones and processing).
    Total playtime with the charging case: 24 hours.
  • With ANC and Ambient Sound Mode Off:
    Up to 12 hours of playtime on a single charge.
    Total playtime with the charging case: 36 hours.

Pro Tip: Turning off ANC and Ambient Sound Mode maximizes battery life. However, if your earbuds aren’t lasting as long as they used to, it might be time for a battery replacement.

Earbuds using Zeni Power Z55H – Battery for case

When Should You Replace the Battery?

Over time, all rechargeable batteries lose their capacity. If you notice any of the following signs, it’s time to replace your Sony WF-1000XM4 battery:

  • Reduced playtime (e.g., under 1 hour with ANC on).

  • The earbuds won’t hold a charge or die quickly.

  • One earbud drains faster than the other.

At CPRepairsLab.com.au, we use high-quality replacement batteries to restore your earbuds to their original 8+ hours of playtime. Let us help you enjoy your music, podcasts, and calls without interruption!

Firmware Updates: Why They Matter

The Sony WF-1000XM4 earbuds receive regular firmware updates to improve performance, fix bugs, and add new features. However, firmware mismatches between the left and right earbuds can cause issues like:

  • Pairing problems – Earbuds struggle to sync or connect.

  • Audio sync issues – Sound is out of sync between the left and right sides.

  • Firmware update failures – Updates may not work unless both earbuds are on the same version.

  • Limited features – Noise cancellation or touch controls may not work properly.

Can You Use Earbuds with Different Firmware Versions?

  • Latest Firmware (2.1.0): at the time of this article Jan 2025
    Both earbuds must be on the same version (2.1.0) to function correctly.

  • Older Firmware (Below 2.0.0):
    Earbuds with different versions (e.g., 1.6.1 and 1.4.2) can still pair and play music, but firmware upgrades and voice updates won’t work. You can disable voice prompts in the Sony Headphones Connect app to avoid issues.

  • Same Firmware Version:
    Earbuds with matching firmware can upgrade and update language packs simultaneously.

Can You Update Just One Earbud?

No. Firmware updates are applied to both earbuds simultaneously because they work as a paired system. If one earbud fails to update:

  1. Reset the earbuds: Place them in the charging case, close the lid for 10 seconds, and try again.

  2. Check battery levels: Ensure both earbuds and the case are fully charged.

  3. Reconnect the earbuds: Forget the device in your Bluetooth settings and pair it again.

If you’re still having trouble, bring your earbuds to CPRepairsLab.com.au for professional assistance.

How Long for the XM4 firmware update

Android Phone – up to 30 minutes

iPhone – up to 60 minutes

Replacing Missing Earbuds

Lost an earbud? Don’t worry! We offer A-grade replacement earbuds for the Sony WF-1000XM4. Our replacements are lightly used, fully tested, and guaranteed to work seamlessly with your existing earbud and charging case.

Key Features of Our Replacement Earbuds:

  • Battery Runtime: 8+ hours (matching the original performance).

  • Compatibility: Choose your missing piece (left or right) and let us know what firmware of your current earbuds is 

  • Quality Assurance: Very light signs of use, fully functional, and tested for performance.


Why Choose CPRepairsLab.com.au?

  • Expert Repairs: We specialize in Sony WF-1000XM4 repairs, including battery replacements, firmware updates, and missing earbud replacements.

  • High-Quality Parts: We use only genuine or A-grade replacement parts to ensure your earbuds perform like new.

  • Affordable Pricing: Get your earbuds repaired at a fraction of the cost of buying new ones.

  • Fast Turnaround: We understand how much you rely on your earbuds, so we work quickly to get them back to you.