AOSP Based ROM for Nexus 7: Bugless Beast!

Google’s very own Jelly Bean tablet – the Nexus 7 – is surely a device that’s very popular thanks to its low price yet high specs as well as being the first pure Google tablet, being sold out at many major retailers all over the world. And the development community is always there for enhancing the experience even further with custom ROMs that implement various improvements, on top of the already amazing Jelly Bean Android 4.1.

Developer Peter Alfonso has released the Bugless Beast ROM for the Nexus 7, which is based on stock Android 4.1.1 and features improvements such as reduced boot-up time, raised audio output level, free tethering enabled (for CDMA variants), and improved performance.

Let’s take a look at how the Bugless Beast ROM can be installed on the Nexus 7.


This ROM and the guide below are compatible only and only with the ASUS Nexus 7 tablet.


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 Bugless Beast ROM on Nexus 7

  1. This procedure will wipe all your apps, data and settings. Backup your Apps and important data — bookmarks, contacts, SMS, APNs (internet settings), etc. This Android backup guide would help you.
    NOTE: 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.
  2. Unlock the bootloader on your Nexus 7 by using the Nexus Root Toolkit → here. This will wipe all the data on the tablet including the files on the SD card, so make sure to take a backup.
  3. Install ClockworkMod (CWM) recovery on the tablet by following the guide → here. Install the touch version of recovery as it is more convenient to use. You can also flash TWRP recovery using the guide → here which has a much better interface compared to CWM recovery.
  4. Download the latest version of the ROM from its development page.
  5. Copy the zip file downloaded in step 4 to the SD card on the tablet (do not extract the file).
  6. Turn off the tablet. Then, boot into recovery. To do so, press and hold the Volume Up + Volume Down + Power buttons together till the device boots into CWM recovery.
  7. Perform a Nandroid Backup of your existing ROM, so that you can always restore it from recovery if something does not work out with this ROM. To perform a backup, select Backup and Restore –> On the next screen, select Backup again. Go back to main recovery menu after backup is complete. (If using TWRP recovery, select Backup, then slide the blue button to the right to confirm backup)
  8. Select wipe data/factory reset, then select Yes on next screen to confirm (or select Wipe » Factory reset if using TWRP recovery then go back to main recovery menu). Wait a while till the data wipe is complete.
  9. 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 – Install on the next screen (for TWRP recovery, select Install, then select the ROM file) . The ROM will start installing.
  10. After the installation is complete, go back to the main recovery menu and select reboot system now to reboot the tablet and boot up into Bugless Beast ROM (or press the Reboot system button in TWRP recovery). The first boot will take some time, up to 5 minutes.
    NOTE: To go back to your previous ROM, boot into recovery (as given in step 6), select backup and restore then restore your previous ROM by selecting it from the list (or if using TWRP recovery, select Restore, then select the backup from the list).

Bugless Beast ROM is now installed and running on your Nexus 7. Visit the development page for updates and more info. Share your thoughts on the ROM in the comments.

Also try out CM10 ROM for the Nexus 7 → here, or the Liquid Smooth ROM → here.