How to Update Galaxy S GT I9000 with f4K Mod ICS 4.0.4 Custom Firmware

Galaxy S ICS New logoSamsung Galaxy S GT I9000 smartphone which still is powered with the age old Gingerbread 2.3.6 firmware by default can now be upgraded with the latest firmware of ICS 4.0.4 firmware of IMM76I build which is a custom ROM firmware. Unfortunately, there won’t be any Official update of ICS for Galaxy S GT I9000 and this custom ROM firmware comes with a very long list of features. Please note that this is not an official firmware released by Samsung Electronics and is a custom ROM firmware released by F4K developer of XDA.

Disclaimer: We should not be held liable for any damage caused in the process of updating Samsung Galaxy S GT I9000. It is very unlikely that your device will be damaged if you follow all the instructions to the point which are mentioned in procedure.

Essential Pre Requisites:

  • Lock screen settings: fixed lock screen wallpapers and custom icons.
  • Lock screen settings: added lock screen 3 & 5 targets.
  • Lock screen settings: added lock screen Weather.
  • Lock screen settings: added lock screen Calendar.
  • Added Theme Chooser.
  • Added F4k MOD Wallpapers (CM source).
  • Added Mi File Explorer.
  • General Settings: added Notification count.
  • Dialer: added Dialpad settings.
  • Fixed lock screen music widget layouts to make update properly.
  • Samsung RIL cleanup.
  • Settings cleanup.
  • Rearranged stock Launcher icons
  • Phone: added National data roaming
  • Odex & Deodex versions

Please note that there will be some minor bugs in this firmware, but will be resolved in the coming builds. So let’s get started with the pre requisites. This firmware ropes in the latest IMM76I build of firmware which is a Galaxy Nexus firmware update.


Pre Requisites:

  • If you are on any of the custom ROM firmware, then you need to wipe the data and clear the cache from the recovery mode. Recovery mode in Samsung Galaxy S GT I9000 can be entered by holding the Volume Up button +Volume Down button. While holding these both buttons, you need to turn ON your device by pressing the Power button.
  • Ensure that you have backed up all the data present in your device as all the data is wiped off. Manually you can back up all the data with the help of below mentioned steps.

SMS – Use “SMS Backup & Restore app”,
Contacts – Sync with the Gmail application,
Images, Songs, Videos, Files – Copy to internal / External SD Card,
APN and MMS Settings – Note down from the path “Applications > Settings > Wireless and Network > Mobile Networks > Access Point Names

  • Minimum battery charge should be 50% and also you will have to make sure that you have enabled the USB Debugging Mode in your device from the path “Settings > Applications > Development > USB debugging”.

So assuming that you have followed all the instructions mentioned above, you can now proceed to the next page where we have summed up a detailed guide on how to apply the update.

  • arjun

    only bugs i found in this F4K update is in the tethering and we cant use a wonderful feature i.e. WI-FI direct.

  • arjun

    It is a wonderful and stable update.
    After this i also updated to XYLON mod 4.2.2 which eats us too much of battery(had to recharge my phone battery 5 times a day)
    Finally rolled back to the F4K custom mod 4.0.4 which is a very good one.
    Waiting for a stable Jelly bean update for I9000.
    If any stable one please provide a link for the same.

    Thanking in advance.

  • jeffrey abarquez

    cant connect to wi fi,,
    help please

  • Vlad

    Mine stuck at “Semaphore kernel” boot logo…help please?

    • Pradeep Neela

      just reboot the device, it will be fixed

      • majid

        mine to is struck at it ….not fixed after reboot

  • Jovian

    Can v get advertisement blocker which was in the previous version.

    • Pradeep Neela

      yes you can apply the update

  • sachin

    I have followed every instruction and updated to F4K MOD ROM. FM radio is missing and is battery consumption is more. Please help to recover Fm radio .

    • Pradeep Neela

      yes FM Radio is missing, download Sprint FM app from PLAY Store

  • Jovian

    Well like all the updates this one works great though I feel this one consumes more battery than the earlier update its based on. Do miss the ad blocker any chance we can get that?

  • Android3633

    Do I frst need to install it on my device than to a computer?

    • Pradeep Neela

      yes you need to install it

  • Saquib Najmus

    getting message signature verification failed installation aborted any help i am installing it over xwjw1

  • doc

    its sucks …. lots of application unexpectedly force close during using….

  • kevalin

    hey i have a problem for all the incoming calls :( :( i was so happy when i had this update in my mobile but in an incoming call the caller cant hear my voice. please help!

    • Pradeep Neela

      you can revert back to any firmware of your choice

  • cali

    hi , can i install it on xwivz

    • Pradeep Neela

      yes you can install the same

  • prashanth kanna

    Great Rom. Works like a charm. Thanks pradeep for sharing…

  • Gerard

    Hello Pradeep,

    I own a GT-i9001 XXKG1(Samsung Galaxy S Plus) which is on FW2.3.3 and kernel
    I understood the only difference with the i9000 would be a higher CPU speed on the S plus.

    Is this custom ROM also suitable for this device?

    gr Gerard

    • Pradeep Neela

      yes, you can update the same again

  • Drishya Moni

    Hi praddeep, My phone is in 2.3.4 and i didnt update after that… can i update to this updation directly??

    • Pradeep Neela

      yes you can update the same directly

  • prashanth

    Hi Pradeep, Can i apply it on XXJVU directly … ?? Any major bugs reported so far ?

    • Pradeep Neela

      yes you can manually apply the update

  • Dom Rice


  • Dpakjohnz

    My galaxy s have android 2.3.3. Cam i update this same rom??
    Please helpwith reply

    • Pradeep Neela

      yes you can apply the update but from cyanogen mod

  • Prashanth kanna

    can i install it on XXJVU rom ??

    • Pradeep Neela

      yes you can install the same from xxjvu version

  • Kabir79

    I’m on 2.3.6 JW5. when apply this update it says, signature verification failed….can you help

    • Pradeep Neela

      root the device please

  • hitesh

    When i want to instal thiz zip shows e:signature verification instal this file..there is need to root my device ???

    • Pradeep Neela

      you need to root the device with the help of same steps again

  • Saquib Najmus

    can i update from ics 4.0.4 brightside evolution custom rom

    • Pradeep Neela

      yes you can update the same

  • Nimitbhawani


  • Catalin – Galaxy GT-I9000M

    Does this update work for GT-I9000M?
    I am right now on the official Gingerbread 2.3.3.
    Can you please recommend the most stable update to ICS that works with this specific model, and the steps to get there?
    Thanks in advance.

    • Pradeep Neela

      its only for i9000 model

  • Deilson Elgui de Oliveira

    Hello! Can I update from Dark Knight ICS? Thank you! 

    • Pradeep Neela

      yes you can apply the update from dark knight ics