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HTC One S Jelly Bean Android 4.1: Unofficial CyanogenMod 10 (CM10) ROM Available But Too Much Broken For Now!


The middleman of the HTC One series – the HTC One S – has got a port of CyanogenMod (CM10) based on Android 4.1 Jelly Bean, following in the steps of the One X. XDA Senior Member djsubtronic has started working on an unofficial CM10 ROM for the device and has released it for everyone so they can get a taste of Jelly Bean and its features.

NOTE: This is an early preview of CM10 as well as Jelly Bean and a major work in progress as a lot of things are broken and do not work yet. Also, CM10 is in a very early state and most of the custom features of CyanogenMod have not yet been added to CM10. So keep in mind that there will be bugs and issues and it will take time for the ROM to become stable and be usable as a daily driver.

Currently, following things work/do not work, quoted from official development page (the list may change as development goes on):

What Works

  • Recognises baseband
  • HW graphics
  • Auto rotate
  • Sounds on speaker
  • USB mass storage (strangely this works even though the phone itself cannot get into sd card)
  • LED flash (torch app)
  • GPS
  • Most apps

What Doesn’t Work

  • Phone/network
  • Can’t seem to access sd card
  • Root access
  • Can’t turn on WiFi
  • Can’t turn on Bluetooth
  • Auto brightness
  • Headphones
  • Quite possibly everything else

Let’s see how CM10 can be installed on the HTC One S.


This guide is applicable only for HTC One S. DO NOT try this on any other device.


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 ROM on HTC One S


  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.
    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.
  2. Unlock the bootloader on your One S by following the bootloader unlocking guide for the HTC One X → here. Procedures for both One S and One X are the same, so simply follow what the One X guide says to unlock the bootloader.
  3. Install ClockworkMod (CWM) recovery by following the guide → here.
  4. Download the latest version of the ROM from the official development page.
  5. Copy the downloaded .zip file to the SD card on the phone.
  6. Open the downloaded zip file and extract the boot.img file from inside it (use a software like WinZip or 7-zip to extract).
  7. Download fastboot.
    Download Fastboot  |  Filename:
  8. Extract the file to the C:\ drive on your computer to get a folder named Fastboot with four files inside it.
  9. Copy the boot.img file extracted in step 6 to the Fastboot folder on C drive. You should have 5 files in the Fastboot folder now.
  10. Switch off the phone. Enter fastboot mode. For that, boot into the bootloader mode first by holding the Volume Down button and then pressing power key. Then, select fastboot mode from there using the volume buttons to navigate and power button to select. Then connect your phone to the computer once you are in fastboot mode.
  11. Open Command Prompt on your computer from Start » All Programs » Accessories.
  12. Now, type the following commands in command prompt to flash the kernel, pressing Enter after each command (Check the screenshot after step 12.2 for reference).
    1. cd c:\Fastboot
    2. fastboot devices (this is to ensure the phone gets detected. A string of numbers and letters should appear if the phone is properly detected, as shown in screenshot below. Else, make sure you have the phone drivers properly installed)
    3. fastboot flash boot boot.img
  13. After the kernel is flashed, you’ll get a finished/OKAY message in command prompt.
  14. Disconnect your phone from the PC.
  15. Now, on your phone select ‘HBOOT’ using the Power button. And then select ‘RECOVERY’ to boot into recovery mode.
    Use volume buttons to scroll up and down and the power button to select options in bootloader menu and recovery.
  16. Select wipe data/factory reset, then select Yes on next screen to confirm. Wait a while till the data wipe is complete.
  17. 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.
  18. After the installation is complete, select go back then select reboot system now to reboot the phone and boot up into CM10.

CM10, based on Android 4.1 Jelly Bean is now installed and running on your HTC One S. 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.

  • Gab

    A little voice review of CM10 Preview 7. Its been pretty stable as a daily rom now, so I recommend anyone to download it.

    • Kapil

      That one is for One X, right? The one above is for One S, X’s little brother.

      Anyway, thanks for sharing!

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