Install Android 2.3.7 CyanogenMod 7.1 on Galaxy S2 (SII) I9100 Guide : Custom ROM/Firmware

Latest I9100XXLPB 4.0.3 Ice cream sandwich ICS for Galaxy S2 released on jan 29

Cyanogenmod is one of the best of the lot of custom ROM for any Android device.Cyanogen have  now come up with a stable version, CyanogenMod 7.1. This update comes with lots of tweaks and improvements ovet the android 2.3.7 Gingerbread.
Am out here with a guide on how to download and install CyanogenMod 7.1 on your Galaxy S2.


  1. An already rooted Samsung Galaxy SII device.Check out on how to root an i9100 device.
  2. ClockworkMod Recovery which will be present in an already rooted device.
  3. Download the CyanogenMod 7.1 from the Cyanogenmod website.

How to mod
  • Place the update-cm-7.1.0-GalaxyS2-signed.zip file in the root directory of the SD card.
  • Boot into the ClockworkMod Recovery.
  • Upon booting up the device into  the ClockworkMod, the side volume buttons can be used to move around. Either of the power button or the trackball button can be used select.
  • Select the option to wipe data/factory reset.
  • Now select the option to wipe cache partition.
  • When the installation is done,select Go Back to get back to the main menu.
  • Now select the option 'Reboot system now'.

You are done with the mod...Now  your Galaxy S2 will boot up into the CyanogenMod...

CyanogenMod is a custom ROM and  using it will void your warranty.And installing a custom made firmware is a risky procedure.so do it at your risk....

Latest I9100XXLPB 4.0.3 Ice cream sandwich ICS for Galaxy S2 released on jan 29


  1. Hello, if you got the reboot loop problem after trying to install CyanogenMod 7 on SGS2 like me, the solution exists, read carefully this topic:

    In my case I put the cm_galaxys2_full-116.zip then I rebooted into clockWorkMod to install the update-cm-7.2.0-RC1-galaxys2-signed.zip
    Again, I had the reboot loop, but no worries, because with the following it was possible to boot CyanogenMod 7.2

    To resume it quick, (but please read the page on the link as well)
    Once in the reboot loop, you are at the step 7.
    8.: dl the latest syah kernel from here: http://forum.xda-dev...d.php?t=1263838 But carefull not the Siyah-v3.x, it's for ICS, USE Siyah-v2.6.x for CM7
    pick the tar version, we gonna hit Odin one more time.
    9.: boot into dl mode (vol down, home and power), start Odin and load the syah kernel file to the pda field. Hit start and wait for the phone to start up.

    And voila! Your phone should boot into CM ok!


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