If you're not in too big a hurry it might be worth waiting for Onyx to get their Android firmware ready. Then you can just install the OverDrive app along with other Reader apps (kind of like an eInk tablet)...
http://www.the-digital-reader.com/20...x-i62-ereader/
Booxter (an Onyx retailer & forum member) mentioned he should be getting a sample soon, so hopefully it will be out for consumer use soon...
https://www.mobileread.com/forums/sho...37&postcount=5