Need help to migrate from MBL to MBL Duo

Hello, 

1-I haven’t seen any widespread issues with the latest firmware (2.42.02), you can check the main thread for the firmware release.

http://community.wd.com/t5/My-Book-Live-Duo/New-Release-My-Book-Live-Duo-Firmware-Version-2-42-02-012-4-10/td-p/555419

2-You can try using the supported version of Twonky media server or the latest DLNA server, to see which one works best for you. 

http://wdc.custhelp.com/app/answers/detail/a_id/5735

3-You can check the My Book manual for more information. 

http://www.wdc.com/wdproducts/library/?id=301&type=25