Update Galaxy S I9000 to Android 4.1.2 CM10 Final Jelly Bean Firmware

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Android 4.1.2 is now available for the Galaxy S I9000 as CyanogenMod 10 (CM10) final has been released. This CM10 custom ROM is based on the official Android 4.1.2 Jelly Bean from the AOSP and along with the stock Android experience, a number of amazing new features and system tweaks have been added into the ROM. You just need ClockworkMod recovery installed and you will be able to update Galaxy S I9000 to Android 4.1.2 CM10 Jelly Bean custom firmware with our tutorial.

In this tutorial, we will tell you how to install Android 4.1.2 CM10 Jelly Bean on Galaxy S I9000 with complete steps using CWM recovery. Make sure you backup all the data as we will have to wipe your previous personal data and apps as usual when installing custom ROMs. We don’t want anyone losing their data. Let’s begin with the tutorial below.

Disclaimer: All the tools, mods or ROMs mentioned below belong to their respective owners/developers. We (TeamAndroid.com) or the developers are not to be held responsible if you damage or brick your device. We don’t have you on gun point to try out this tutorial ;-)

Make sure you have installed all your USB drivers for the Samsung Galaxy S to connect it with the computer. Download Samsung Galaxy S USB drivers! Apart from just the USB drivers, there are a few more things that you need to take care of.

1. You need to enable USB debugging mode. This helps to connect your Android phone with the PC. See here: How to Enable USB Debugging.

2. Your phone battery should be 80-85% charged. If your phone goes off suddenly because of battery, during flashing ROMs or installing mods and updates — your phone might go dead permanently. See here: How to Check Battery Percentage.

3. Backup all your important data that you might need as soon as your flash a new ROM, or make a backup for just in case, you never know when anything might go wrong. See below on how to backup data:

Data can also be backed up using Samsung KIES for their devices, but if you backup data manually, you get more options what top choose from and it is very easy to move data across Android devices from different manufacturers, i.e moving Samsung Galaxy Note backup data to HTC One X.

4. Your phone should be factory unlocked. Additional instructions for locked Android devices will be added in the tutorial for unlocking devices.

5. Remember, this is not an official firmware update. This is a custom ROM, based on AOSP release of the Android 4.1 Jelly Bean.

UPDATE: CM10.1 with the latest Android 4.2.1 is now available for this Android phone. Read the tutorial here: How to Update Galaxy S I9000 to Android 4.2.1 CM10.1 Jelly Bean Custom ROM.

Now, let’s proceed with the tutorial on the next page and update Galaxy S I9000 to Android 4.1.2 CM10 Jelly Bean custom firmware.


  • Drrizwan

    Has anyone tried this?

    • aarkaycee

      Hi Drrizwan,
      Try it out. The installation was successful after a minor problem. On choosing CM-10…zip to run to install, everything was smooth and it got installed at last.
      I couldn’t hold myself to wait for few days for TeamAndroid guys to confirm my above doubt. So I took risk to go ahead with installation.
      On first look interface is looking the same as ICS333 which I had prior to this installation.
      Go andead, wish you good luck.
      AarKayCee.

      • Drrizwan

        Hi AarKayCee,
        Glad to know that u didnt face any issues. By the way I’m running on stock 2.3.3 version. I hope even incase something happens, we can flash the original Nandroid backup ROM using CWM recovery right?

        • aarkaycee

          Yes, it can be done when need arises. But i never did it so cant say about the kind of problems will be faced. The overall experience of CM10.0.0 is that customs roms are fast with little more convenience with more issues over the stock roms. At last, stock roms without bloatware with speed will be the best solition. cheers!!!

  • aarkaycee

    Hi TeamAndroid,
    I would like to ask you before I begin flashing 4.1.2 CM10 Jelly Bean using your tutorial is that – Can I flash on my rooted SGS GT-I9000 running ICS333 2.0.1 custom ROM? About phone: Android version 4.0.4, Baseband version I9000xxjvu, Kernal version 3.0.8-Semaphore_ICS_1.2.2s, Build number IMM76L ICS333-2.0.1
    Awaits your quick response,
    AarKayCee

  • Rubins

    thank you guys so much, easiest one (and i tried many that messed my phone up!