--- /dev/null
+= Release Notes for Version 1.6.4
+:toc!:
+:doctype: article
+
+ Version 1.6.4 fixes a bluetooth communication problem with
+ TeleBT v1.0 devices, along with some altosui and altosdroid
+ minor nits. Ship firmware for some newer devices.
+
+ == AltOS
+
+ AltOS fixes:
+
+ * Fix hardware flow control on TeleBT v1.0. Hardware RTS/CTS
+ doesn't seem to work, switch from using the
+ hardware to driving these pins with software.
+
+ == AltosUI, TeleGPS and AltosDroid Applications
+
+ AltosUI and TeleGPS New Features:
+
+ * Automatically switch from meters or feet to kilometers or
+ miles for distance units.
+
+ AltosUI and TeleGPS Fixes:
+
+ * Abort map preloading when the preload map dialog is closed.
+
+ == Documentation
+
+ * Mention TeleMega v2.0 in hardware specs table.
+
+ * Document TeleGPS RF output in telegps manual.