How to install CM9 ICS custom ROM on Samsung Galaxy S I9001 Plus:

How to install CM9 ICS custom ROM on Samsung Galaxy S I9001 Plus:

1. Download the CM9 based custom ROM from HERE. Save the file on your PC and don’t extract its contents.
2. Download Google Apps zip for CM9 / ICS from HERE. Save it on your computer and leave it as it is.
3. Now that you’ve downloaded these two files above, you should move them on your phone’s internal SDcard. Do it using the USB cable and dropping the files on the root of the internal sdcard; it is the first folders menu that opens when the phone connects to your PC.
4. After the transfer is complete, you should disconnect the phone from PC and power it OFF. Boot into TWRP Recovery mode or in CWM Recovery mode. Both are working with these files. We will use TWRP. Enter custom Recovery mode by pressing ‘volume up’ and ‘power’ buttons at the same time and when the Samsung logo appears you should press the Menu button to load recovery mode.
5. When in recovery mode you should first use the ‘Backup’ option to save the existing ROM. In case you already have a full backup of your currently installed ROM then you can skip this step.
6. Select ‘wipe’ and then ‘factory reset’ and confirm that you want to wipe all data. Remember that this won’t delete the internal sdcard, so you’re safe and the files downloaded at steps 1 and 2 will be left unchanged.
7. Now select ‘Install’ and after that browse for the ‘CM9 ICS custom ROM’ zip file. It is the file downloaded at step 1 and moved on your device’s internal sdcard at step 3. Install this file.
8. When the ROM was successfully flashed you should repeat step 7 in order to install the ‘Gapps’ file. This will install the Google Apps that your phone needs. With these apps you will gain full control over the ICS Android 4.0 ROM.
9. When the installation of both the ROM and the Gapps files is complete, you should select ‘Reboot system’. Now your device will restart and this first boot process into the new CM9 ICS custom ROM will take at least 5 minutes to complete.
10. After the first boot loads you will be taken to the new ICS welcome screen and you should enter your Google account details to take control over your phone’s functions.

NOTE: If the first boot process takes over 15 minutes to complete, then the update wasn’t correctly installed and you should re-apply all the steps listed above, as you might have skipped some of the steps that I have listed. Eventually you should manage to install this new ROM. If you cannot complete the install then you should tells us in comments and we will try to help you.

I hope that you found this guide helpful and that now your Galaxy S Plus I9001 is running the CM9 ICS ROM.

Do not attempt to restore applications backups, only use AppBak tool to see which apps were installed before you applied this new ROM. Restoring the applications’ backup files will make the ROM unusable. Also, if you have trouble with this ROM you should restore the full backup ROM file that you created before moving to this tutorial.

For any other questions use the comments filed at the end of this post and I’m sure that you’ll be given a solution to your problems.

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