OpenWrt recommended builds for WRT160NL (use at your own risk):
OpenWrt latest builds - http://downloads.openwrt.org/
=======2011 Builds=======
openwrt backfire 10.03.1 - download factory or upgrade firmware | packages | changelog
=======2013 Builds=======
openwrt attitude adjustment 12.09 - download factory or upgrade firmware | packages | changelog
=======2014 Builds=======
openwrt barrier breaker 14.07 - download factory or upgrade firmware | packages | changelog
-features and changes: native IPv6 support enabled by default, 6relayd superseded (replaced) by odhcpd, 802.11ac support to mac80211 and hostapd, libimobiledevice updated to 1.1.6, (+libplist 1.11, libusbmuxd 1.1.9, should fix pairing issues), shairport updated to 1.0, should fix AirPlay issues, Kernel 3.10 is used for most targets because of LTS
=======2015 Builds=======
openwrt chaos calmer 15.05 - download factory or upgrade firmware | packages | changelog
- SquashFS Getting Major Performance Enhancements in Linux Kernel 3.14
openwrt designated driver 16.xx (no LuCI GUI) - download factory or upgrade firmware | packages | roadmap
=======Upcoming Changes and Features=======
=======Useful Links=======
WRT160NL Wiki - https://openwrt.org/toh/linksys/wrt160nl (old 1, 2)
WRT160NL Support Page - https://forum.openwrt.org/viewtopic.php?id=20298
openwrt-devel mail archives - https://lists.openwrt.org/pipermail/openwrt-devel/
Random MAC address assigned with every reboot fix.
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OpenWrt GitHub commits - https://github.com/openwrt-mirror/openwrt/commits/master
OpenWrt GitHub Packages commits - https://github.com/openwrt/packages/commits/master
OpenWrt Packges Repo - http://downloads.openwrt.org/snapshots/trunk/ar71xx/generic/packages/
OPKG commands - http://wiki.openwrt.org/doc/techref/opkg