I added what I think is the ARM version of the person's compile to the SCL. You're welcome to try it to see if it's x86, but I'm pretty sure it's ARM
https://www.hpcfactor.com/scl/2042/Igor_Pavlov/7-zip_7zr_Console/ver...
I think it's 7zr, which means it's like a console based utility? Maybe try on your CE6 ARM device?
^Anyway, I think this is the version that they'll be able to compile for x86 for us! Crossing fingers!!!