GalaxyS2, unrooting and flashing stock

Associate
Joined
26 Aug 2003
Posts
204
I have a rooted GS2 running JellyBAM 4.2.2
I'm selling it due to an upgrade, so I want to unroot and flash the latest stock firmware for the GS2.
So do I do it in that order? Also what is the latest firmware? and which one should I flash? It was on O2 but Im currently waiting for an unlock code.
Thanks for any help
 
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