Miiiiike!
Welcome back!
Rollbacks for both are here: http://wdc.custhelp.com/app/answers/detail/a_id/5860/
WD removed the rollback package for the Live-SMP because of some mysterious issue with the rollback process, but others have done it successfully using this firmware:
http://download.wdc.com/wdtv/wdtvlivegen3_1.03.10.zip and modifying the VER file.
*I* wouldn’t do it, because I don’t know what the mysterious issue might be…
Just turn the New Firmware Nag off in the SETUP menu.
