Key Takeaways
1. Xiaomi launched HyperOS 3 globally with the Xiaomi 15T and 15T Pro, but these models come with HyperOS 2 pre-installed.
2. The Xiaomi 15 is now the third device to access HyperOS 3, specifically version 3.0.4.0.WOCEUXM, currently limited to Mi Pilot testers.
3. The rollout for HyperOS 3 may take longer for the broader Xiaomi 15 user base, as distribution is currently restricted.
4. The update includes Android security patches from October 1, 2025, addressing various security vulnerabilities.
5. The download size for HyperOS 3.0.4.0.WOCEUXM is approximately 8.2 GB.
Earlier this week, Xiaomi began its global software launch for HyperOS 3 with the Xiaomi 15T and Xiaomi 15T Pro. To provide some background, the company unveiled these devices last month along with the worldwide release of its new Android update. Nevertheless, both models come pre-installed with HyperOS 2, which is based on Android 15. Therefore, it is expected that these smartphones will eventually upgrade to Android 20, which is one version behind the pricier Xiaomi 15 (currently priced at $902 on Amazon).
Update Availability
Interestingly, the Xiaomi 15 has now become the third device that can access HyperOS 3 on a global scale. As per various reports, the update is labeled as HyperOS 3.0.4.0.WOCEUXM for users with the EU variant of the Xiaomi 15. Although this version is stable, sources like GSMArena have indicated that Xiaomi is limiting the distribution of HyperOS 3.0.4.0.WOCEUXM to its Mi Pilot testers at this stage.
Rollout Timeline
This means that it might take a little longer for Xiaomi to make HyperOS 3 available to a broader audience of Xiaomi 15 users. According to the screenshot below, HyperOS 3.0.4.0.WOCEUXM includes the Android security patches from October 1, 2025. For comprehensive information regarding the security vulnerabilities that these updates address, you can consult the relevant Android Security Bulletin.
Download Size and More Info
Regarding HyperOS 3.0.4.0.WOCEUXM, GSMArena mentions that the update requires a download of approximately 8.2 GB. Additional insights about Xiaomi’s significant OS update are available in our initial article covering the launch of HyperOS 3. Furthermore, the company has disclosed its complete schedule for the HyperOS 3 global rollout, which we have included below for your reference.
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