Known Issues:
For people who migrated from previous installation, you may see "VLAN cannot be empty" error when you are trying to modify AP overrides. It might also stop you from switching WLAN Group. Reported here.
Hotspot portal quota is not working. Reported here.
A bug in USG 4.2.7 was found, causing offload module being disabled unintentionally. Side effects include: per-client rate limiting is not working for wired client, wired client counters may be inaccurate.
How to play safe?
Make sure you always do a backup before any updates, especially if you plan to upgrade your existing installation.
Release Notes:
Starting from this release, UniFi Controller no longer bundles UVP app. Instead, the UVP app will be downloaded from CDN.
Settings-VOIP-"Platform Image Cache" option has been replaced by Settings-Controller-"Phone Image Cache", and its default is disabled.
For people who are migrating from v3, there're many changes to APIs and it's not backward compatible. You may need to update the shell library (unifi_sh_api) and/or your customized portal/external portal code.
For hotspot management console, make sure you have bookmark the url with site name. For example: https://unifi.yourdomain.com:8443/hotspot/s/SITENAME
Bundled Firmware
USG = 4.2.7
USW = 3.3.5
UAP = 3.2.11
Changes in 4.6.4
UniFi Controller
Add auto phone firmware upgrade option (per-site settings).
Support DEBUG level syslog logging.
Check (and optionally cache) phones app upgrades from CDN.
Add check button in Settings-Controller for checking UVP upgrades from CDN.
OUI table updated.
Verified admin can no longer be re-invited.
When an existing admin is invited to a new site, no password update is required.
Fixed issue with revoked admins maintaining partial access in existing logged in session.
When updating admin's email, change is rejected if that email is pending verification.
Insight/Switch-Stats Overview, POE column is now un-sortable. Reported here.
Fixed unable to set SFP/SFP+ ports to aggregate. Reported here.
User/guest filter in client view now works when browser language is Simplified Chinese.
Controller no longer ignores PtP/Virtual Interfaces. This resolves incorrect upgrade url/guest redirection url when devices are contacting controller with those network interfaces. Reported here.
Language selection is removed for now. The controller detects browser language automatically.
CSRF token will now be invalidated properly on logout.
Relax device username restriction to ^[_A-Za-z0-9][-\@_.A-Za-z0-9]*$. Reported here.
Login name with '@' symbol is now considered as invalid.
Fixed a UI bug that causes switching to different site to get stuck.
When deleting a site, verifications (pending admins) of the site will also be invalidated now.
Improve error handling on handling lingering objects. Reported here.
Controller will no longer send rate update to AP/USG when there’s no UserGroup defined and Guest Portal is disabled, so the devices will not get stuck in a re-provision loop.
Fixed DHCP Pool IP validation so it does not reject x.x.x.0 ipv4 addresses. Reported here.
Fixed incorrect description on wlan overrides in AP dialog.
Fixed VLAN ID overrides. Reported here.
Eliminated duplicate Rogue DHCP events/alerts.
Cancel button within a dialog will now go back to previous view instead of closing the entire dialog window.
UniFi Security Gateway
Fixed firewall rules for external guest portal.
UniFi Switch
No longer reports client IP address in reversed order.
Improve uplink port detection.
UniFi AP
Fixed disabled legacy (802.11b) support on UAP-AC/UAP-AC-Outdoor.
Fixed slow throughput when UAPSD (WMM-PS) is enabled on UAP, UAP-LR, UAP-Pro and UAP-Outdoor series.
Fixed missing Radius Accounting attributes on UAP-AC/UAP-AC-Outdoor.
WLAN scheduler no longer depends on uplink connectivity monitor.
Improve IGMP snooping on UAP-AC/UAP-AC-Outdoor.
Fixed stamgr output on UAP-AC/UAP-AC-Outdoor. Reported here.
Improve wireless connection stability with certain mobile devices on UAP-AC/UAP-AC-Outdoor.
Add HT40/80 support for Costa Rica on UAP, UAP-LR, UAP-Pro and UAP-Outdoor series.
UAP-ACv1 2.4GHz now correctly advertise b/g/n mode support. Reported here.
UAP-AC/UAP-AC-Outdoor no longer report invalid RSSI values.
Improve the device/controller connection reliability on all models.