I recently upgraded to the Samsung Galaxy S 2. I was a long time HTC fan but their recent move on bootloader locking made me jump ship. The Galaxy S 2 is an amazing device. Anyway, maybe I’ll write more on that again..
Of course, the first thing I did with my phone is root it. Which Samsung has made easy for the developers to create the tools needed.
The second thing I did was start flashing ROMs and I ran into one irritating problem. Once I flash the ROM the Samsung Apps threw an ERROR 4002 up. I had no idea what this meant. However, from some searches I found out that it needed a file called CSC in order to determine you region and DRM rights etc.
So, what I came up is this..
I restored the original ROM and used root ability to find the CSC files and copy them to the SD Card, then restored my new ROM and copied these in the ROM. Bang.. it all works as its supposed too..
WARNING: ROOT REQUIRED – Dont bother commenting below that “It needs root!.. this article is crap.. blah blah
Disclaimer: Any damaged caused to your phone is your problem… If you lack confidence, buy a nokia 
This may work on any Samsung
Step By Step
- Buy/Download Root Explorer
- Go to the ROOT of the file system.. keep pressing back or up.. till you see /
- Scroll Down to SYSTEM
- Inside here copy the CSC Folder and the two files that follow ending in CSC to your SD CARD
- Flash your new ROM or Restore the New ROM from your Nandroid backup
- Open Root Explorer
- Navigate to are you saved you CSC files on the SD CARD
- Copy them and navigate back to the root / and then to /system
- Switch the system at the top so that it is in MOUNT R/W
- Paste Files
All done
Let me know if you want my CSC files. I am in Ireland on o2 so that may make a difference, I have no idea…..
