In July, I found out that AT&T released the red Galaxy S3, asked a couple of sources (official mobile operators and ah beng shops), and there were no confirmation we would get them in Singapore. On impulse, I bought it off the Internet (eBay has everything, you know?). Anyway, we now have the red S3 available in Singapore. It’s the i9300 model, which is quad core. The AT&T model is i747 and it’s only dual core.
Received from SingPost (bloody charged me additional 7% GST) on 23 Aug, but haven’t been able to update to Jellybean as the software wasn’t available.
Randomly did a Google search for “i747 jelly bean” today and found out that CyanogenMod has a Jellybean nightly for my device.
Follow the steps below to get Jellybean nightly from CyanogenMod into your i747 from AT&T.
- How to flash ClockworkMod Recovery
- How to root and install BusyBox (Note: Installation of BusyBox is not mandatory)
- Download and install ROM Manager from Google Play Store
- Start ROM Manager
- Tap on “Backup Current ROM” and select your device “Samsung Galaxy S III (AT&T)”
Note: If it prompts you to install ClockworkMod recovery, wait for the app to finish processing, allow Superuser access to ROM Manager, and tap on “Backup Current ROM” again. - Name your backup and tap “OK”, your device will perform the backup and reboot.
Backing Up - Download the latest nightly build from CyanogenMod Nightly Builds for Samsung Galaxy S III (AT&T) i747 and Google Apps Package into your computer
- Connect your device to your computer and copy paste the nightly build and Google Apps package into your device’s internal memory
- Start ROM Manager
- Tap on “Install ROM from SD Card” and select the nightly build file
- Check “Wipe Data and Cache” and “Wipe Dalvik Cache”
- Tap “OK” twice, and wait for your device to finish processing and reboot.
Installing CM JellyBean Ta-dah! You are now running the latest nightly from CyanogenMod.
CyanogenMod Loading Screen - Start ROM Manager
- Tap on “Reboot into Recovery”
- Tap “OK” to confirm
- Tap “Allow” Superuser access to ROM Manager
- Use the down volume button to navigate to “install zip from sdcard”, use the home button to select this option
- Use the home button to select “choose zip from sdcard”
- Select the Google Apps package
- Use the down volume button to navigate to “Yes – install…”, use the home button to select this option, and let your device process
- Tap the back button
- Press the home button to select “reboot system now”. That’s it, you’re done! 🙂