Preliminary BlackWidow Firmware
http://www.rfactory.org/OpenWRT/
For those wishing to help test the latest firmware, codenamed BlackWidow. This has all the same features as Redback but utilizes an improved modem detection scheme. It should support more modems with less trouble than Redback.
Router Model Router Version
TP-Link MR3020 Updated 2013-03-13 V1
TP-Link MR3040V1 Updated 2013-03-13 V1
TP-Link MR3220V1 Updated 2013-03-13 V1
TP-Link MR3220V2 Updated 2013-03-13 V2
TP-Link MR3420V1 Updated 2013-03-13 V1
TP-Link MR3420V2 Updated 2013-03-13 V2
TP-Link WR703N Updated 2013-03-13 V1