Thanks for the great info.
I was able to install saferoot and get my phone back to some semblence of usefullness after my phone took the I605VRUEMJ9 update, without my permission nonetheless, but now that I have it rooted, I need to stop them from doing any more updates unless someone here says it's safe and that it won't remove my root!
Can anyone advise how I can stop the update that's currently prompting me to install it and prevent them from installing in the future?
Thanks for all the help here!!