From 3.1.7->3.1.8
Controller - use Get for payment URL forwarding.
Controller - use UTF-8 for portal page.
UAP - fix Guest Portal redirector (borken in v3.1.7).
UAP-AC - add rogue AP scan.
From 3.1.8->3.1.9
Installer - no longer install JRE for the user, redirect the user to Sun's website instead.
Controller - fix SMTP port showing 25/465 even if it's customized
AP - fix firmware upgrade issue where the Ethernet interface occasionally (1%) failed to start after rebooting.
AP - improve firmware upgrade reliability for UAP, UAP-LR and UAP-Outdoor
AP - upgrade dropbear from v0.51 to v2013.59 for improved security.
UAP - fix 802.1x roaming failure in Zero Handoff.
UAP-AC - SDK upgrade.
UAP-AC - fix rogue ap on CH 0 (ng).
UAP-AC - fix the issue of abnormal positive stations signal strength.
UAP-AC - fix the issue of failing to set 2.4G HT40 channel.
Download: http://community.ubnt.com/t5/UniFi-Beta ... 51#U662151