Finally, we were wondering when it would turn up. In a nontraditional turn of events, the international variant of the Samsung Galaxy S3 has received the official CM10 ROM – based on Android 4.1 Jelly Bean - after the US variants. CM10 brings along Jelly Bean features such as a smoother interface, advanced voice recognition and search functionality, better keyboard, improved and actionable notifications area, and a lot more which you can read about here.
Keep in mind that this is not an official Samsung ROM but an unofficial custom ROM that is in development, and it may have a few issues present and some things may not work properly. Also, since this is an unofficial custom stock Android ROM, Samsung specific features will not be present in it and some apps like the camera may be different.
Update: As of 16 Oct ’12, CM10 for the Galaxy S3 has the following issues:
- Camera: Recording effects broken
- Camera: Touch 2 focus issues
- Wifi: Tethering broken
- Bluetooth: Tethering broken
- FM Radio: unsupported
- TV Out: unsupported, will never work
Let’s see how CM10 can be installed on the Samsung Galaxy S3.
This hack and the guide below are compatible only and only with Galaxy S3, model number i9300. It’s not compatible with the US variants or other devices. Check your device’s model number in: Settings » About phone.
The methods and procedures discussed here are considered risky and you should not attempt anything if you don’t know completely what it is. If any damage occurs to your device, we won’t be held liable.
How to Install CM10 on Galaxy S3
- Install the CM9 ROM on your S3 by following the guide → here. This step is important.
- [Skip if you already made a backup while installing CM9 in step 1] This procedure will wipe all your apps, data and settings (but it will NOT touch your SD cards, so don’t worry about those). Backup your Apps and important data — bookmarks, contacts, SMS, APNs (internet settings), etc. This Android backup guide would help you.
Important! Don’t forget to at least make a backup of your APN settings, which you can restore later if your data connection does not work after installing the ROM. Use the backup guide to find out how.
- Download the latest version of the ROM from → here.
- Download the Google Apps package. This will install apps like Play Store, Gmail, etc. which are not present in the ROM by default.
Download Gapps | Alternate Link | Filename: gapps-jb-20120726-signed.zip
- Copy the downloaded zip files from step 3 and step 4 to the internal SD card (do not extract them, copy the zip files directly).
- Now, boot into ClockworkMod recovery. To do that, turn off your phone. Then, hold down Volume Up, Home and then the Power buttons together until the screen turns on, then let them go. The phone will boot into ClockworkMod recovery in a few seconds.
In recovery, use the volume buttons to scroll up/down and the home button to select an option.
- Select wipe data/factory reset, then select Yes on next screen to confirm. Wait a while till the data wipe is complete.
- Select install zip from sdcard, then select choose zip from sdcard. Scroll to the ROM file on the SD card and select it. Confirm installation by selecting Yes on the next screen. The ROM will start installing.
- After ROM installation completes, select choose zip from sdcard again, then select the gapps-jb-20120726-signed.zip file to install the Google apps package.
- After the ROM finishes installing, select go back then select reboot system now to reboot the phone into CM10.
NOTE: If you want to return back to a stock Samsung ROM, follow the guide here to do so.
CM10, based on Android 4.1 Jelly Bean is now installed and running on your Samsung Galaxy S3. Visit the source page for more info and to get the latest updates on the ROM. Share your thoughts on the ROM in the comments.