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How to update Asus Nexus 7 with official CyanogenMod 10.1 (CM10.1) Android 4.2 Jelly Bean ROM

The official CyanogenMod 10.1 Android 4.2.1 Jelly Bean ROM has recently been released for Asus Nexus 7 and owners who wish to take this route can now update their device anytime. Many developers have been working on this project so there’s nothing to worry about because this build is stable. It also brings the original features of a stock Android 4.2 JB ROM plus hundreds of cool customizations.

Pre-update Reminders

  1. Create a backup of all your data including your files, videos, SMS and contacts. Here’s our guide on how to effectively make Android backups.
  2. Make sure you have rooted your device as you will definitely need root access to flash custom ROMs, firmware and mods. Here’s our rooting guide.
  3. Enable USB Debugging in your device. Go to Settings => Applications => Development => USB Debugging.
  4. Check if you have enough battery left to do this process. You are required to have, at least, 65% battery but it is advisable you fully-charge your device if you can.

Disclaimer: You can neither blame The Droid Guy nor XDA Developers if you brick your device during this process. It is only for people who have basic knowledge on how to flash firmware into Android devices or those who are willing to take the risk. But it’s on you if you update your ASUS Nexus 7 with the CyanogenMod 10.1 Android 4.2 Jelly Bean ROM.

Step-by-step Tutorial

Step 1: Download two necessary packages: CyanogenMod 10.1 Android 4.2 Jelly Bean and Google Apps. Save these packages in a directory you can easily access and find in your computer.

Step 2: Copy both packages into your device’s internal memory.

Step 3: Disconnect your device from your computer and download ROM Manager from the Google Play Store. Just a quick note, don’t select the Backup option in ROM Manager as it may brick your device completely.

Step 4: Install ROM Manager and launch it after, then select Reboot in Recovery Mode. Just wait a few moments as your device enters the recovery mode.

Step 5: Once your Asus Nexus 7 is in recovery mode, perform a full data wipe: select Wipe Cache Data, then Wipe Data.

Step 6: After doing a full data wipe, choose the option Install zip from SD Card and browse through your Nexus 7’s internal memory and choose the CM 10.1 Jelly Bean package.

Step 7: Repeat previous step and choose Google Apps package this time.

Step 8: It may take a few minutes to have the update successfully applied so you have to wait a bit. Once the update is complete, Reboot your device and wait until the home screen shows up completely before using it.

Some users reported to have entered the boot loop mode after flashing the custom ROM. The effective workaround for this is to repeat this entire process. Yeah, it often works the second time.

All credits go to XDA Developers.

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