Install Official CyanogenMod 9 on AT&T Galaxy Note [How-To]
CyanogenMod team has released the CM9 for the Samsung Galaxy Note officially that brings pure stock Android Ice Cream Sandwich experience, it’s complete AOSP (Android Open Source Project) based custom ROM. Do keep in mind that it’s nightly build of CynogenMod 9, nightly build rebuild itself daily, and you may face bugs in new things.
Here’s step by step guide to install official CyanogenMod 9 (CM9) on AT&T Galaxy Note. Make sure that ClockworkMod recovery is installed on your device. Make a backup of your device data such as SMS, internet setting, contacts music files etc because the below procedure may wipe data, you can sync your contacts with Gmail account and for messages use SMS apps, lastly use file expert app to backup apps.
DISCLAIMER: Please proceed the below guide at your own risk, Android Egis will not be held responsible if your device lost data or get damaged following this guide.
Step #2: Turn the device off and reboot into recovery mode by holding down Volume Up down and Power buttons, when it turns on leave power but button but now volume button until it take you to recovery mode.
Step #3: In recovery mode, create a nandroid backup of your current ROM, it’s important because if anything not work out that you expect from this ROM, you’ll be able to easily revert back to your current state. To create backup select “Backup and Restore”, and then select “Backup” again.
Step #4: Select “Install Zip from SD Card” then “Choose Zip from SD Card” and locate the downloaded file that you’ve transferred in above step and confirm installation. Wait till installation complete.
Step #5: Perform full wipe, first select the wipe data/factory reset, and confirm on the next screen then select wipe cache and confirm on the next screen.
Step #6: Select “Go Back” after that select “Reboot System Now.”
That’s it, you’re done. If you want to upgrade the CM9 to new version simply, download .zip file and install in recovery mode but after installation just wipe cache partition and dalvik-cache. You can comment below for queries.