Android Update, News, Apps and Hacks

Unofficial CyanogenMod 10 (CM10) Build Brings Jelly Bean Android 4.1 to HTC Evo 4G


Still rocking the good old original HTC EVO 4G? Good news for you. An unofficial build of CM10 – based on Jelly Bean Android 4.1 – has come out for the device, thanks to XDA Senior Member jmztaylor. Jelly Bean brings features such as a smooth as butter interface, Google’s voice recognition helper called Google Now, a smarter keyboard, better accessibility, an improved and actionable notifications menu, and a lot of others, which CM10 brings along with its own improvements such as faster performance and better customization to your Evo 4G.

NOTE: The ROM is in a very early stage of development and not suitable for daily use yet, so there are quite a few issues with a lot of thinks not working, so consider this a preview of Jelly Bean. Also, CM10 is in an early stage so do not expect to see many customization options of CyanogenMod to be present in the ROM in the beginning.

Here’s a list of things working/not working quoted from the development page (where you can get the most updated list of issues):


  • Wifi
  • Sound
  • Phone calling
  • Data
  • SMS

Broken: (In order of importance)

  • All video playback causes hot reboot
  • Camera
  • Camcorder
  • 4G
  • FFC

Read on for the installation instructions for CM10 on the HTC EVO 4G.


This ROM and the guide below are compatible only and only with the HTC EVO 4G. Do not try it on the EVO 4G LTE.


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 HTC EVO 4G


  1. 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.
    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. Make sure the bootloader is unlocked with S-Off and ClockworkMod/AmonRa recovery is installed on your device.
  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/Play Store, Gmail, etc. which are not present in the ROM.
    Download Gapps  |  Filename:
  5. Copy the two zip files downloaded in step 4 and 5 to the SD card on the phone (do not extract the files).
  6. Boot into recovery. To do that, turn off the phone. Hold Volume Down & the Power buttons until the device boots to recovery, or HBOOT. If the latter, wait until the menu appears, then press Volume Down to highlight RECOVERY then Power to select and then boot into recovery.
    In recovery, use the volume buttons to navigate/scroll and the power button to select.
  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.
  8. Select wipe data/factory reset, then select Yes on next screen to confirm. Wait a while till the data wipe is complete.
  9. Select mounts and storage, then select format system, and confirm format on next screen. Then, go back to the main recovery menu.
  10. 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.
  11. After ROM installation completes, select choose zip from sdcard again, then select the file to install the Google apps package.
  12. After the installation is complete, go back to the main recovery menu and select reboot system now to reboot the phone and boot into CM10. First boot will take up to 5 minutes.
  13. Returning to Previous ROM: To go back to your previous ROM, boot into recovery (as given in step 7), select backup and restore then restore your previous ROM by selecting it from the list.

CM10 based on Jelly Bean Android 4.1 is now installed and running on your HTC EVO 4G. Visit the official development page for updates and more info. Share your thoughts on the ROM in the comments below.

Some HTML is OK
Join us on Facebook!schliessen