First, my screen on the balckberry has a lot of dust under it. how do i take the case apart to give it a good clean.

Second I am on O2 here in the UK and currently the phone has OS 4.2.0.51 (platform 2.2.0.32). what is the latest operating system for this phone that will work on my service provider. or does it not matter what service provider you are on. basically i want the version that allows me to seperate my texts from emails. very annoying that.

any help is greatly appreciated.

found thread on disassembly so now all i need answered is the upgrade of the OS. cheers

Main Page - BlackBerryFAQ

everything you ever wanted to know and more

The latest OS for the 8100 from O2 is 4.2.1.93. Get it here:
BlackBerry from O2 - Help and support

thanks for that. so if i upgrade do i lose all the applications that i have added since getting this phone or does it only upgrade the operating system leaving everything else in place? i do not need to worry about losing my contacts etc do i?

The applications you installed won't get deleted, and your device will be backed up if needed. Desktop Manager should handle it all automatically.

ok thats great. shall do this when i get home then. fingers crossed no problems arise and i won't have to come crawling back here for help.

Just follow the directions explicitly... (this is another version of the 8100 OS, you can use the O2 version, but these step0by-step directions are good.
http://www.blackberryforums.com/gene...ht=8100+latest

And you certainly won't have to come crawling! Just ask.
You are on the right path.