Install Ice Cream Sandwich on HTC G2 and Desire Z [Android 4.0] with JIBwich Custom Rom

Yesterday another custom Rom was released for HTC Desire Z and its T-mobile variant G2. This Rom is based on AOSP ICS 4.0.3 and is titled Ice Cream JIBwic, version 1.1 being the latest as of now. Developed by XDA member xT4Z1N4TRx, this Rom is Heavily Optimised and based of Andromadus Sources. But be warned that this rom is based on AOSP ICS and is still under heavy developement, so be prepared to encounter few bugs every now and then.  Read on as we guide you through the procedure to install this ROM on your phone.


The methods and procedures discussed here are considered risky and you should not attempt anything if you don’t know exactly what you are doing. If any damage occurs to you or your device, including a bricked, non-functional device, we won’t be held liable. You have been forewarned!


This ROM and the guide below are compatible only and only with the HTC Desire Z and the T-Mobile G2 (Vision). So, be sure to try this only on HTC G2 or HTC Desire Z and not on any other device.

ROM Info:

Developer: xT4Z1N4TRx

Rom Status:


  • Phone
  • Mobile Data
  • Touchscreen
  • Wifi
  • Bluetooth
  • Physical Keyboard
  • Audio
  • REAL Hardware Acceleration
  • Screen Orientation
  • GPS
  • USB Mass Storage
  • Camera (Check FAQ!)
  • Others

Not Working:

  • FM Radio
  • Other things I don’t know about 
  • Camcorder

Whats coming next?

  • New camera app
  • Cyanogenmod messaging app


  • Q.Why are there visual artefacts in the pictures i take?
    A.I don’t know the cause, but to fix it change it to VGA quality.

Pre-Installation Requirements:

  • Imp!! Rooted HTC Desire Z/T-Mobile G2 with Clockworkmod Recovery installed.
  • Battery charged to minimum of 50%.
  • 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.

How to Install Ice Cream Sandwich on HTC G2 / Desire Z using JIBwich Custom Rom

  1. Download the latest version of Ice Cream Sandwich based JIBwich rom from the official development page.
  2. This Rom comes sans Google apps like market, Gmail, etc. So, download the Google Apps add-on package too from the link in step 1 above.
  3. Transfer both of the downloaded zip files from step 1 and 2 to the root of your external micro SD card on the HTC Desire Z/T-Mobile G2.
  4. Switch off your phone, then boot into Clockworkmod recovery, following the procedure for your phone as given below.
    For Desire Z: Hold Volume Down & the Power button until the device boots to the bootloader. Once in the bootloader, use Volume Down to scroll to “recovery” and press the Power button to select.
    For T-Mobile G2: Press down on the Trackball, hold Volume Down & the Power button until the device boots to the bootloader. Once in the bootloader, use Volume Down to select “recovery” and press the Power button to select it.
    In recovery, use Volume buttons to navigate and the Power button to select options.
  5. [Optional] 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.
  6. Now, in the main recovery menu, select ”wipe data/factory reset”, then select “Yes” on the next screen. (This does not touch your SD card, so don’t worry).
  7. Next, select Wipe Cache Partition » select Yes to confirm
  8. From the main menu of recovery, select Advanced, and then Wipe Dalvik Cache » select Yes on the next screen. You’re done wiping off the data now. Lets flash the JIBwich rom now.
  9. Scroll to the option “Install zip from sdcard” and select it. Select “choose zip from sdcard”, then browse and select the rom file from step 1. Then, select “Yes” on next screen to confirm installation.
  10. After the installation is complete, select “go back”, but don’t reboot yet. Select “install zip from sdcard” again, then “choose zip from sdcard”. The browse to the file from step 2 and select it. This will install Google Apps like Market, Gmail, etc.
  11. After the installation of gapps file is done too, you’re good to reboot the system. Select “go back” then select “reboot system now” to reboot your HTC Desire Z or T-Mobile HTC G2, and taste the ICS goodness right on it.

Share your thoughts and problems in the comments below and we’ll do our best to help you out.