Yea, the echo stager seems to be working marvelously. The problem I can see is that the mipsle and mipsbe payloads don't run on the devices. It seems to reference "MIPS32", as opposed to the prior two. It seems to be a different file type.

I've been trying to get a working toolchain, so I can try building proper executables, but haven't had a ton of luck yet. I keep trying with the GPL code from NetGear. We'll see!