Xiaomi starts June security patch rollout for HyperOS 3 phones

Xiaomi has started pushing its June security patch for Android to a small batch of HyperOS 3 phones, led by the Xiaomi 15 Pro, Xiaomi 15 Ultra, Xiaomi 15T Pro, Xiaomi 14T Pro, and Redmi K70 Ultra. There are no new features here, which is exactly the point: this is the kind of unglamorous maintenance release that quietly keeps premium phones harder to break into while Xiaomi widens the rollout over the coming weeks.

The first wave is split by region and build number. In China, the Xiaomi 15 Pro is receiving OS3.0.304.0.WOBCNXM, while the Xiaomi 15 Ultra is on OS3.0.306.0.WOACNXM. In Europe, Xiaomi 15T Pro users get OS3.0.304.0.WOSEUXM, and Xiaomi 14T Pro owners get OS3.0.302.0.WNNEUXM; Redmi K70 Ultra devices are being updated in selected Chinese regions.

What the June security patch changes

The update is limited to Android security fixes. Xiaomi is not adding interface tweaks, camera features, or hidden extras, and that restraint is common for monthly patch drops across the Android world. Samsung and Google do the same dance: the marketing team gets nothing to brag about, but users get fewer open doors for attackers to walk through.

That matters because modern Android security bulletins often close off dozens of vulnerabilities of different severity levels. Most people will never notice the difference on day one, which is probably the best possible outcome for a security release.

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HyperOS 4.0 is already in the pipeline

While this patch is all about tightening screws, Xiaomi is also moving toward its next major software step. HyperOS 4.0 is expected to be based on Android 17 and is said to arrive soon, which puts today’s update in the familiar middle ground between routine security work and the larger platform shift already waiting behind it.

• Early recipients: Xiaomi 15 Pro, Xiaomi 15 Ultra, Xiaomi 15T Pro, Xiaomi 14T Pro, Redmi K70 Ultra
• Release focus: Android security fixes only
• Next software milestone: HyperOS 4.0

The rollout will widen soon

Xiaomi says the patch is currently limited to a few flagship models, but the list should expand in the near future. The smart money says the company will keep prioritizing its newest and highest-profile devices first, then push the same security package down the lineup once the initial rollout settles.