Madox uploaded several firmware images for the TL-WR703N, TL-WR720N & TL-MR3020, get them from the Madox Google Code page:
Based on OpenWRT r36503, it has the new 3.8.10 kernel as well as the new LuCi theme. Due to the slowly expanding size of the kernel and the packages, I had to drop 3G out from the ‘standard’ image and made a separate ’3G’ image. All images are very barely tested though so that’s why I’m not updating into the main project page.
The benefit of these images is that this time I’ve included the image builder as well as helper scripts that should give people an idea on how to quickly roll their own images and still have access to a set of online packages.
Have you seen this project?
https://forum.openwrt.org/viewtopic.php?id=43237