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UniFi OS (Dream Machines) 5.1.27 (release candidate) – safe to update?
Not a stable release: Ubiquiti lists 5.1.27 as a release candidate (RC) on its release page, not a general-availability release. Community so far: 0 problem reports and 0 positive reports found on Reddit. Out for 74 days and we haven't found any problem reports. Quiet isn't proof — but most bad releases get noticed within a week.
Release candidate / early access
UniFi OS (Dream Machines) 5.1.27 is not a stable release: Ubiquiti lists 5.1.27 as a release candidate (RC) on its release page, not a general-availability release. Only devices on the vendor's release-candidate or early-access channels are offered it. Most people should stay on the latest stable release, UniFi OS (Dream Machines) 5.1.33.
Newer release in this line: UniFi OS (Dream Machines) 5.1.33 (2026-09-09). If you're updating now, check that one instead — it may already fix the issues reported here.
Did you install 5.1.27?
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What's in this release
Overview UniFi OS 5.1.27 includes the improvements and bugfixes below. Bundled application • UniFi Network 10.4.57 Improvements • Improved device stability.
Source: community.ui.com RSS
CVEs fixed
No CVEs mapped to this release.
Community reports
- No community reports found yet. We check Reddit every few hours for posts that mention this version.
Reports are found automatically and labelled by an AI model plus keyword rules — they can be wrong. Open the post to judge for yourself.
← UniFi OS (Dream Machines) 5.1.26 · UniFi OS (Dream Machines) 5.1.30 →
Other UniFi OS (Dream Machines) versions
- 5.1.33 2026-09-09
- 5.1.31 2026-08-20
- 5.1.30 Release candidate / early access 2026-08-17
- 5.1.27 Release candidate / early access 2026-08-04
- 5.1.26 2026-07-22
- 5.1.19 2026-06-17
- 5.1.15 2026-06-01
- 5.1.12 2026-05-21
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