Hello,
as far as i know for now there is no newer firmware update version that you can install to the ultra ii drives. but you can also check with the ssd dashboard software if you can find some more information about it.
http://kb.sandisk.com/app/answers/detail/a_id/15108/kw/ssd%20dashboard
of course you have always also the option to contact the support directly to find some more information about your drive.
