Any development on the WGT624 or WGU624?
Everything, and I mean everything, you need to get Redboot flashed to your Atheros ar5312/ar2316 wiSoC-based board is here - http://www.meraki.net/linux/redboot_mini.tar.gz
In particular, you should take a look at the ap30, ap38, ap50, ar5312, and ar2316 directories under redboot_mini/ecos/packages/hal/mips/.
For the Fonera and Meraki look here - https://dev.openwrt.org/changeset/5898.
The developers have indicated that the port to some of the earlier wiSoCs is forthcoming. Perhaps we should donate a few pieces (WGT624s and WGU624s) to support the effort.
-nih