1. Home
  2. Mobile

Install Custom CM7-EX Gingerbread ROM on HTC Evo 4G


The HTC Evo 4G with its excellent hardware capabilities is amongst today’s top most smartphones specially if you look at the 1GHz Scorpion processor, its 512MB RAM and the utterly mind blowing 1GB ROM!  When it comes to the software, HTC Evo 4G was released in the summer of 2010 when Android’s latest stable distribution was Éclair. However, Android has come a long way since then. If you’re looking to install a latest Gingerbread ROM on your HTC Evo 4G, carry on reading.

Disclaimer: Please follow this guide at your own risk. AddictiveTips will not be liable if your device gets damaged or bricked during the process.

This ROM based on the CyanogenMod 7 release of Gingerbread has been released by the XDA Developer user biofall, heavily customized in terms of visuals, themed applications, and performance increments such as screen animations. Here is a fan-made video of the ROM in action on the EVO 4G.

Now that you have watched the ROM in action, here are the instructions on how to get it up and running on your phone.

UPDATE: The ROM has now 4G support with some additional features, and is now called CM7-GX4. The download links have been updated.



  1. Copy all of the above downloaded files to the root (i.e. not in any sub-folder) of your SD card.
  2. Reboot your phone into recovery.
  3. Perform a nandroid backup.
  4. Flash FORMAT_ALL.zip from recovery.
  5. Wipe data, cache and Dalvik cache.
  6. Flash the ROM, reboot your phone into Android and then reboot back into recovery.
  7. Flash the battery mod, reboot your phone into Android and then reboot back into recovery.
  8. Wipe cache and dalvik cache.
  9. Flash the kernel, reboot into Android and then reboot into recovery yet again.
  10. Finally, flash Google apps and reboot your phone.

If you are not familiar with any of the above steps such as taking a nandroid backup, wiping data, cache and Dalvik cache or flashing a ROM or app, refer to our extensive Android flashing guide that explains all these in detail. For any bugs, queries or suggestions, please visit the original thread at XDA Developers.


  1. I resolved the 4G issue by downloading the updated rom from here http://download.cyanogenmod.com/get/update-cm- I followed the same instructions on this page except I replaced the file CM7-EX.v10.zip with update-cm- and skipped the optional battery mod. 4G works perfect

    To check for an even newer update visit:


  2. Nice ROM. Some apps may not be compatible, I only came across one that did not work which was a game I can live without. The app “Land Line Phone Dialer” works with this ROM which is a nice plus. As far as the ROM default system apps, 4G does not appear to be working, No settings to turn 4g on and off that I could find. Has a nice VoIP feature built into the phone dialer. VoIP is glitchy, Have not made a successful VoIP phone call (3rd party app resolved this issue). Wi-Fi hot spot functions very well as an “Access Point” and not an Ad-Hoc. This works very well with my Eye-Fi SD card. I no longer have to pay sprint for this feature. Really nice ROM, I’m glad I installed it. I’m hoping there is an update to resolve the 4G problem but this ROM is well worth the sacrifice since 4G is not available in my area yet.

  3. when i try to flash the format all zip i get this message:

    amend scripting (update-script is no longer supported
    it was necesary to remove it clock work 3.0
    install aborted

    what do i do to fix that


  4. i heard there was a issue with the 4g on this rom is that true?…..ill put this rom on when all bugs are worked out

  5. I wanted to know if anyone has had a buggy network connection. My Internet comes and goes but I can still receive and send calls. Also, I think that it also does this when using 4G too. Just asking. I love the rom but just want to make sure Im not the only one experiencing this. Thanks.

Leave a Reply

Your email address will not be published. Required fields are marked *

This site uses Akismet to reduce spam. Learn how your comment data is processed.