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Nothing Phone (4b) Update History
The newest software for the Nothing Phone (4b) is Nothing OS B4.1-260904-1739, released on 4 Sep 2026, running Android 16 and includes the September 2026 security patch. Open any version below to read its full changelog.
Nothing OS B4.1-260904-1739Latest4 Sep 2026
What's New in This Update
General Improvements and Bug Fixes
- 🎚️ Optimised the volume slider animation effect at minimum volume for a more fluid feel.
- 🖼️ Improved preset UI display stability and fixed known glitches.
- 📶 Enhanced Wi-Fi connection stability and reliability.
- 📷 Enhanced overall camera stability.
- ⚙️ Enhanced overall system stability.
- 🛡️ Updated to September 2026 security patch.
Notes:
Your device may use more power and feel warmer during installation. Performance will return to normal after the update is complete.
Nothing Phone (4b) Update FAQ
How do I install a Nothing OS update?
Open Settings, go to System, then System update and tap Check for update. Keep the phone on Wi-Fi with at least 30% battery. Rollouts are staged, so the update can reach your device days after it appears here.
Why has my phone not received the update yet?
Nothing releases updates in phases by region and carrier. A build listed on this page means it has been published, not that it is live for every user. Waiting a few days is normal.
Is it safe to update to a new Nothing OS version?
Yes, official OTA updates are safe, but back up photos, contacts and call logs first, especially before a major upgrade. Your phone may feel warm and use more power right after installing.
What do the build numbers mean?
A build such as B4.1-260415-1709 reads as branch B4.1, build date 26-04-15 (15 April 2026) and build time 17:09. Builds starting with V belong to Nothing OS 3.x, B to 4.x and C to 5.x.
Is this site official?
No. Nothing Firmware is an independent community project and is not affiliated with Nothing Technology Limited.