What do you need? the avalon modified cgminer source code? Need to light a fire under Yifu, zhang and xiangfu to get a real working copy. https://github.com/BitSyncom/cgminer.git
You can modify the software/firmware. I've been doing it all day. I pulled down the latest firmware and hacked the crap out of it and got rid of things I didn't want. Freed up some room. Enough to tinker and add my own scripts and such.
https://en.bitcoin.it/wiki/Avalon#How_to_Compile_Your_Own_WR703N_Firmware_for_Avalon
Yes I'm bitter about the whole Avalon experience, seeing them mine 10s of thousands of dollars worth of bitcoin each day with software mostly written by us, without them engaging us at all (except to get into a bunfight with Kano) or us earning a cent for our part, but it's not your fault.