You should first read up about upgrading the Storm, in the Storm OS Sub Forum, BUT you will find a link in my thread to a custom made installer that automates the 122 upgrade process. VERY easy to use, almost as easy as the actual installer would be. Use the last link in my sig.
I'm been running the .122 OS on my storm without any problem since the CDMA and Java files were leaked. As pk said, using lyricidal's .122 installer is the simplest method for users that aren't comfortable with playing with the installation files. If you decide to go this route make sure that you read the thread carefully and do a complete backup before attempting the process.
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