[Samsung Epic 4G Touch] 2momo123:
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Welcome to our street on XDA! Glad to see you have an Epic touch! I personally enjoy Cyanogen Mod Alpha 6, but it does have a few bugs. The one that annoys me the most being that cusotm ringtones are not supported yet. (The gf doesn't like not having her custom ringtone when she calls me ;)) But overall it is highly customizable and a great rom! I also like Blu Kuban (yes I did spell that right, Blu Kuban) but it is a little too Blue for my personal liking, but other than that I hear great things about it. I too recommend that you thoroughly read "The Official how I hard bricked my E4GT thread" http://xdaforums.com/showthread.php?t=1509795 as well as the "How Not To Brick Your E4GT (UPDATED 5/21/12)" thread http://xdaforums.com/showthread.php?t=1525495

From what I understand, the main things bricking Epic Touches right now is not being careful when flashing kernels. Currently, I believe that the recommended standard is when you wish to upgrade to a new rom, you first flash this in odin and then update: http://chris41g.devphone.org/EpicTouch/Stock Repack/EL26/StockCWM-EL26.tar.md5

This is a Gingerbread Kernel, and most people seem to recommend it when upgrading to ICS. In other words, Say one was on a stock FF18 root, one would open odin, flash this, then in the Clockwork recovery provided (the way people usually upgrade Modems, Roms, etc...) flash their new ICS Rom.

To Root, I might take a look at this, but I personally have not tried it, and don't know if it works or not. :

http://xdaforums.com/showthread.php?t=1721229

I believe in order to do that, in theory one would do the following:

Download that

Flash it in Odin

Done

If one wanted to go to Stock FF18 to Cyanogen Mod, I believe one would do the following:

Download and flash that rooted FF18 above,

Flash that EL26 CWM file I linked to earlier

Flash the Cyanogen Mod Alpha 6 http://e4gtcm.blogspot.com/p/cm9-status.html

Before you go ahead with any of this though, I would confirm that this is working with others, as I personally have not ever tried to start out on a non-rooted ICS Rom.

Also, whats called an emmc bug is currently going around, that hard-bricks devices in theory. Do be careful of this. It seems to be contagious through recoveries and kernels. I would read up more on this, as I myself am not fully educated upon the matter.

Also, please note that I do not take credit for any Kernels or Roms mentioned in this post, and that I in no way helped develop them. I also take no credit in discovering the emmc bug, I simply read about it, and have bricked one of my devices by getting the bug.

If you have any questions, let us know!