Nothing OS 4.0 Stable Update Begins Rolling Out for CMF Phone (1), CMF Phone (2) Pro

Highlights

• Nothing OS 4.0, based on Android 16, has begun rolling out in phases for CMF Phone (1) with CMF Phone (2) Pro to follow soon.
• The update adds tweaks like battery percentage inside the icon and marks CMF Phone (1)’s final major OS upgrade.
• CMF Phone (2) Pro gets its first major OS update with support for three Android upgrades up to Android 18 and six years of security patches.

Nothing has officially confirmed the stable rollout of Nothing OS 4.0 based on Android 16 for the CMF Phone (1) and CMF Phone (2) Pro. The announcement aligns with the company’s earlier promise that both CMF devices would receive the stable update before the end of the year. Here’s what we know about the rollout.

Nothing OS 4.0 Stable Update

According to Nothing, the stable Nothing OS 4.0 rollout for the CMF Phone (1) has started today. As the update is being released in phases, it may take a few days before it reaches all users. The CMF Phone (2) Pro is next in line and is expected to receive the update in the coming weeks, although Nothing has not shared a specific release date.

The company also confirmed that the stable Nothing OS 4.0 update will be made available to Nothing Phone (3a) Lite users starting in January 2026.

A CMF Phone (1) user has shared a screenshot of the update changelog, revealing that the firmware package weighs around 2.03GB and comes with the build number Tetris-B4.0-251216-1717-IND. Another user highlighted a noticeable visual tweak introduced with the update, where the battery percentage is now displayed inside the battery icon on the CMF Phone (1).

With this rollout, the CMF Phone (1) is receiving its final major operating system upgrade. In contrast, the CMF Phone (2) Pro is getting its first major OS update. Nothing has previously confirmed that the CMF Phone (2) Pro is eligible for up to three major Android updates up to Android 18. This support is paired with six years of security patch support as well.

FAQs

Q1. Which devices are receiving the Nothing OS 4.0 stable update?

Answer. The update is rolling out to CMF Phone (1) now, with CMF Phone (2) Pro to follow in the coming weeks.

Q2. What changes and details are included in the update?

Answer. The firmware package is about 2.03GB (build Tetris-B4.0-251216-1717-IND) and introduces tweaks like showing the battery percentage inside the battery icon.

Q3. How long will CMF Phone (2) Pro be supported?

Answer. The CMF Phone (2) Pro is eligible for three major Android updates up to Android 18 and six years of security patches.

Also Read –

https://www.mymobileindia.com/nothing-confirms-nothing-os-4-0-stable-rollout-starting-november-21-heres-all-you-need-to-know/

https://www.mymobileindia.com/nothing-phone-3a-and-phone-3a-pro-receive-nothing-os-4-0-open-beta-update/