You can try asking O+ for it here: http://www.oplususa.com/contact
Considering they don't have anything on their site about updates or anything, good luck.
Only other thing I found that MIGHT help was from here: http://www.symbianize.com/showthread.php?t=1141330
But you have to sign up for the link, which I was too lazy to do, so not even sure if the link works. Plus you need to install CWM, if you don't already have it. Seems there might be more info here: http://www.symbianize.com/showthread...0#post19138030
Sorry, can't be too much more helpful as that isn't my language and Google Translate is struggling with half of it. Between that and needing to register to click on any link, it's more of an educated guess if that'll be helpful. If nothing else, you can maybe ask some of those guys that actually have the phone to grab that for ya.