Ice Cream Sandwich for Samsung Galaxy S (ICSSGS) releases RC4.1 of Android 4.0.3 
The ICSSGS team have released RC4.1 of their ICS ROM for Samsung Galaxy S in the last few days. This release fixes a number of issues including the touchscreen failure bug, the lock screen negative flashing, wifi and radio issues and more.

Check out the official page at the Google Code site for files and updating instructions: https://code.google.com/p/ice-cream-sandwich-sgs/

Quick update instructions (from ICSSGS RC 3.1):

1. Download ICS RC4.1 ROM ZIP file from google code site
2. Copy downloaded zip file to root of phone's SD card. Verify file copied perfectly (file sizein bytes, md5 or something)
3. Reboot phone and select recovery mode (hold power button -> Reboot -> Recovery)
4. Follow menu instructions to update from ZIP file on sdcard. New ROM will be installed
5. Follow menu to reboot phone
6. Phone will restart and do some updating. Done!

No Responsibility.

Nathan 
I have found that 4.1 compared to 3.1 is a bit of neither here nor there. While it fixes (to some extent) most of the obvious bugs in 3.1 (although, not entirely, just seems to lower the frequency of them occuring) the speed compared to 3.1 is somewhat slower.

I would reflash back to 3.1 over 4.1, but they have since released 4.2 so now I have to try that.

The bottom line: 3.1 was so fast it was ridiculous. 4.1 is slower but it [almost] fixed the touchscreen bug and games run a lot stabler on it. (I only play Wordfeud and Chess.com so that's what I mean by "games")

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