Just upgraded my Samsung Galaxy S – I9000 to Android 4.2.x ….

…using these guidelines

http://www.android.gs/install-tsunami-x-android-4-2-2-jb-custom-rom-for-the-samsung-galaxy-s-i9000/

I used these instructions to root my phone and install the custom room and can vouch for that everything there works perfectly – sooooo happy with my “new” Samsung