Overview

This tutorial will explain how to install CM10.1 for Galaxy S2 i9100 (Android Jelly Beans 4.2.2).

Download

Download Links:

1. ClockWorkMod 5.5.0.4 for Galaxy S2 Only: Download CWM 5.5.0.4 Galaxy S2
2. Latest CM10.1 for Galaxy S2 i9100 nightly builds: i9100: CM10.1 for Galaxy S2 i9100
3. Latest Google Apps: Google Apps for Android

• If you need a different Modem have a look at ROM-Manager for other Modems.

Installation

Step 1 - CM10.1 installation first step is installing a custom recovery

ClockWorkMod (CWM) Recovery Installation Instructions

1. Go into Setting ->Developers option and enable USB Debugging on your Galaxy S2
2. Power off your device
3. Boot into Download-Mode using Volume Down + Home + Power
4. Hit Volume Up to accept the warning
5. Start Odin (1.85)
6. Choose ClockworkMod-Recovery_X.X.X.X.tar as PDA (Don’t mark re-partition!!!)
7. Connect your Phone
8. Start flashing

Step 2 - Now that you have CWM installed you can continue to CM10.1 installation

1. Copy GApps and CM10.1 ZIPs to your internal SDCard
2. Boot into Recovery
   • Volume Up + Home + Power: boots your Phone into Recovery Mode.
   • Volume up: Highlight up
   • Volume down: Highlight down
   • Home: select
   • Power: back
3. Flash CM10.1 zip from internal SD-Card
4. Flash GApps zip from internal SD-Card
5. Wipe Data / Factory Reset (resolves several issues)
6. Reboot

Restoring Apps + Data might cause problems and is not recommended, avoid it if possible!

Upgrading

Upgrading from an earlier version of CyanogenMod 10:

1. Copy CM10.1 ZIP to your internal SD-Card
2. Boot into Recovery
3. Flash CM10.1 zip from internal SD-Card
4. Flash CM10.1 GAPPS zip from internal SD-Card
5. Reboot