Android Update, News, Apps and Hacks

Android 4.1 Jelly Bean for AT&T Samsung Skyrocket: CyanogenMod 10 (CM10) Alpha Build Now Available


Want to try out Android 4.1 Jelly Bean on your AT&T Galaxy S2 Skyrocket? You can do so with the alpha build of CM10 for it, based on Jelly Bean and developed by XDA Forum Member sk8erwitskil. Jelly Bean brings a lot of new features to the Android world, specially a butter smooth interface and animations, along with improved voice search functionality, better keyboard, Google Now for automated information, offline voice typing, better accessibility, and many others.

NOTE: The ROM is quite an early and “pre pre pre” alpha build according to the developer, so note that it is not supposed to be used as a daily ROM. Bugs and issues are expected to be present, as well as things that do not work correctly yet. Also, CM10 is in a very preliminary stage right now, hence there are no specific customization features of CyanogenMod in CM10 yet, so consider this a purely preview version of CM10, even though it can be used for getting a taste of Jelly Bean on your device.

Currently, the following things work/do not work in the ROM:

– data
– bluetooth
– adb (you must turn on developer options)
– messaging
– wifi
– root and busybox (flash THIS in recovery) (thanks jivy26)

NOT working:
– everything else

Read on to find out how you can install Android 4.1 Jelly Bean on your Galaxy S2 Skyrocket with CM10 ROM.


This ROM and the guide below are compatible only and only with the AT&T Galaxy S2 Skyrocket, model number SGH-I727. It’s not compatible with any other device, including other US variants of S2, the Epic 4G Touch, and AT&T Galaxy S2. 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 S2 Skyrocket


  1. Make sure you have ClockworkMod (CWM) recovery installed. Use the guide here to install touch CWM on your Skyrocket.
  2. 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.
  3. Download the latest version of the ROM from the official development page.
  4. Download the Google Apps package. This will install apps like Market, Gmail, etc. which are not present in the ROM.
    Download Gapps  |  Filename: 
  5. Download the DarkSide Super Wipe file, which will be used to wipe the necessary partitions on the phone before installing the ROM
    Download Link  |  Filename:
  6. Download the superuser/root fix package, which is necessary for working root access.
    Download Link  |  Filename:
  7. Copy the 4 .zip files downloaded in steps 3, 4, 5 and 6 to the internal SD card on the phone (do not extract them).
  8. Turn off the phone, then boot into CWM recovery. For this, press and hold these 3 buttons together until Samsung’s screen shows up: Volume UP + Volume Down + Power. Phone will boot into CWM recovery.
  9. Select install zip from sdcard, then select choose zip from sdcard. Scroll to the file on the SD card and select it. Confirm installation by selecting Yes to wipe the necessary partitions.
  10. After installation is complete, go back to the main recovery menu by selecting go back. Then, select mounts and storage, then select format cache, followed by selecting Yes on the next screen. After format is complete, go back to the main recovery menu.
  11. 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. The ROM will start installing.
  12. After ROM installation completes, select choose zip from sdcard again, then select the file to install the Google apps package.
  13. After installation of the Gapps package completes, select choose zip from sdcard again, then select the file to install the root fix package.
  14. After the installation is complete, select Go back then select reboot system now to reboot the tablet and boot up into CM10. The first boot will take some time, up to 5-7 minutes, so be patient.

CM10, based on Android 4.1 Jelly Bean is now installed and running on your Samsung Galaxy S2 Skyrocket. Visit the official development page for more info and to get the latest updates on the ROM. Share your thoughts on the ROM in the comments.

  • oddalot

    Thanks for the hard work that went into this guide, it really helped

    • Kapil


  • Joe Menard

    YES Im so excited for a stable relase thank you so much i love cyanogenmod :)

  • Firreath

    It is an amazing rom I used it for a little while the other day but just keep looking for it don’t install it just yet if you want a daily driver. Just stick with cm9 tell they start releasing nightly builds for cm10

Some HTML is OK
Join us on Facebook!schliessen