I'm glad to see Octo getting an update because previous one, as seen in Rapidroid ranking, has something strange, possibly due to a compiling issue, which caused it to play way weaker than expected, despite the multi core setting available and functional.
I hope the new version compiled by Jim helps Octochess get what it deserves. Must hit 2600 ELO at least on Android.
P.S.: Tried UCI and XB both on my RK3066 device today. After import, i see "engine exits"... :-(