Galaxy S II

Update Telcel Galaxy S2 GT I9100 with UHMS9 Official Jellybean 4.1.2 Firmware

Jellybean 4.1 LogoAn all new version of Jellybean 4.1.2 firmware for Galaxy S2 GT I9100 is out and is dubbed as UHMS9. So, let’s check out on how you can apply this firmware in your Galaxy S2 GT I9100 smartphone. Please be informed that this firmware can only be applied on the i9100 variant of Galaxy S2 and not on the I9100G model as it may even brick your device. Also, you need to make sure that your device is not a NETWORK LOCKED device. The detailed changelog of UHMS9 is mentioned below;

Note: This update is strictly for TELCEL Network Locked Phones and not for Unlocked Devices.

  • TouchWiz Nature UX,
  • Samsung’s S Cloud services,
  • New lockscreen with many customization options,
  • New features like direct call, smart stay and pop-up play comes built in,
  • New widgets which are in Galaxy S3
  • Free 50GB Dropbox Storage Feature,

This firmware updates fixes most of the bugs in the device and also issues related to heating has been partially addressed. So, let’s proceed with the detailed yet quick pre requisites below and then followed by the procedure on how to update with this firmware.

Quick Pre Requisites:

  • Create a backup of all the data with the help of below mentioned steps and not with the KIES as your device may not detect with the KIES after applying this update as till now this update might not have arrived for your Country.

SMS – Use “SMS Backup & Restore app”,
Contacts – Sync with the Gmail application,
Call Log –Call Log and Restore
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

  • Enable the USB Debugging from the path “Settings > Applications > Development > USB debugging” and also you will have to ensure that the minimum battery life should be 30% so as to ensure that the phone doesn’t get turned Off in the middle of update. Disable / uninstall all the security suites installed in your phone.
  • Now, turn Off your device so that it can be entered in the Recovery Mode. Recovery Mode in Galaxy S II I9100 can be entered by pressing the Volume Up + Menu Button and then holding these both buttons, you will need to turn ON the device so that it can be entered in the Recovery Mode.
  • In Recovery Mode, clear all the cache and wipe the data by selecting the corresponding options. Once it’s done, reboot the device in the Normal Mode. If you are on custom ROM firmware, then you also need to clear the dalvik cache.

Disclaimer: Follow all the instructions mentioned in this article as if there is any damage caused due to not following instructions then we shall not be held liable or responsible. Just in case if you face any issues then we will try our level best to address the same.

Let’s head over to the next step where we have summed up the detailed guide on how to apply with this firmware update.

Procedure to Update Galaxy S II with UHMS9 Jellybean 4.1.2 Firmware:

  • Download the UHMS9 Jellybean 4.1.2 Firmware Package from here to your computer along with Odin. Once downloaded, open Odin in your computer and turn off your phone so that the same can be entered in the Download mode.
  • Download mode in Galaxy S II GT I9100 can be entered by pressing Volume down Key, Center button, and holding both simultaneously press the Power Button after which a green robot will be shown indicating the Download Mode has been entered.
  • Once the device is entered in the Download Mode, connect your phone to the computer with the help of original USB cable and in Odin you will see that the ID : COM section will turn Yellow indicating that all the drivers are installed successfully.
  • Now, click on “PDA” to select the tar file which you got upon extraction to click on “Start”. Once clicked on Start, it will take around 3 -4 minutes for applying the update. As soon as the update is applied successfully, the device will be rebooted.
  • Please note that it may take more than 4 -5 minutes to reboot the device sometimes due to some reasons, so ensure that you don’t press the power button or the USB cable in the process. Till you see the Language selection / Country Selector option, don’t disconnect the device from computer.

Note: Just in a rare case if the device doesn’t boot up or show the home screen then remove the battery and reinsert the same to boot the device again in the normal mode.

You can check the current firmware version from the path “Settings > About Phone” where the current firmware version will be UHMS9 Jellybean 4.1.2 Firmware. Do let us know in the comments section just in case if you face any issues as we will try to address the same as soon as possible. Very soon we will be coming up with a separate article which will help you root the device as well.

48 Comments

48 Comments

  1. drigbye

    March 19, 2013 at 2:39 pm

    my device was NOT network locked and became networked locked to Telcel after installing this! Now i cannot connect to my mobile network. I have no idea how to unlock my phone now. Have tried basically every sim unlock app on the play store but none of them worked. What a nightmare! do you know how to fix?

    • Pradeep Neela

      June 1, 2013 at 11:43 pm

      kindly contact service centre

  2. jude

    March 9, 2013 at 9:10 pm

    Is this workable for S2 GT I9100? Yes or no?

  3. Jamal

    March 9, 2013 at 8:40 pm

    no. my phone was not locked.

  4. siefe

    March 9, 2013 at 8:34 pm

    hi Pradeep, k my phone working good but without sim card always tell network lock telece

  5. Abhishek Patel

    March 9, 2013 at 7:46 pm

    i’m getting “NETWORK LOCKED” when i flash this.
    clicked on Dismiss, it went. but why did it occurred?
    does this have any consequences?

  6. Abhishek Patel

    March 9, 2013 at 7:45 pm

    i’m getting when i flash this.
    clicked on Dismiss, it went. but why did it occurred?
    does this have any consequences?

  7. norbacs

    March 9, 2013 at 4:42 pm

    Hi Pradeep, is this ROM not locked to Telcel? Please check. Thanks.

    • Pradeep Neela

      March 9, 2013 at 7:05 pm

      its not locked..

      • norbacs

        March 9, 2013 at 7:32 pm

        is this not branded to Telcel? but when I used my network it is showing “Emergency Calls only”. my phone is an unlocked phone and been updating it using this site. it’s only now that i’ve got this. kindly check. thanks.

  8. JAMAL

    March 9, 2013 at 4:17 pm

    I UPDATED MY PHONE & IT GAVE ME SIM LOCK. PLEASE HELP.

    • Pradeep Neela

      March 9, 2013 at 7:07 pm

      was your phone a locked phone before?

      • JAMAL

        March 10, 2013 at 12:00 am

        it is only lock for telcel

  9. Dinesh

    March 9, 2013 at 1:27 pm

    where is the file ? Nothing to download

    • Pradeep Neela

      March 9, 2013 at 2:57 pm

      its there in the procedure section

    • Pradeep Neela

      March 9, 2013 at 3:00 pm

      we have updated the same

  10. John from Nigeria

    March 9, 2013 at 12:33 pm

    Please can the link to the download be rectified? Because it’s not showing as a link.

    • Pradeep Neela

      March 9, 2013 at 3:00 pm

      the download link has been updated

  11. Mark

    March 9, 2013 at 12:27 pm

    Where exactly can I download this firmware?

    • Pradeep Neela

      March 9, 2013 at 3:01 pm

      the download link has been updated and is there in the procedure section

  12. John from Nigeria

    March 9, 2013 at 12:24 pm

    The link for the firmware download is not there or it’s not working.
    Is the firmware UHMS9 for international version of SGS2 GT I9100? because I once installed it from another website and it was showing SIM lock on my screen and only showing Emergency call on all my SIM cards. Please your quick will be appreciated.

    • JAMAL

      March 9, 2013 at 3:07 pm

      SAME HERE. PLEASE ADVISE.

  13. JAMAL

    March 9, 2013 at 11:29 am

    where is the link?

    • Pradeep Neela

      March 9, 2013 at 3:01 pm

      the link is there in the procedure section

  14. ROB VANES

    March 9, 2013 at 10:12 am

    There is no link to download….

    • Pradeep Neela

      March 9, 2013 at 3:01 pm

      we have refreshed the links and are now there in the procedure section

  15. Vivek

    March 9, 2013 at 9:53 am

    Unable to find download link…

  16. norbacs

    March 9, 2013 at 6:11 am

    where is the link of the ROM and Odin?

    • Pradeep Neela

      March 9, 2013 at 3:03 pm

      it is there in the procedure section.

  17. Michael

    March 9, 2013 at 5:56 am

    Hi Android Advices Team
    There is no download for(Update Galaxy S2 GT I9100 with UHMS9 Official Jellybean 4.1.2 Firmware)there is only description written (Download the UHMS9 Jellybean 4.1.2 Firmware Package from here to your computer along with Odin. Once downloaded).Please apply to fix it thanks…

    • Pradeep Neela

      March 9, 2013 at 3:04 pm

      hi michael, we have fixed the download links and is now there mentioned in the procedure section

  18. leedsnyc

    March 9, 2013 at 5:38 am

    There are no links to the firmware

  19. NEVILLE

    March 9, 2013 at 4:52 am

    download link is missing

    • Pradeep Neela

      March 9, 2013 at 3:04 pm

      we have refreshed the links and is now there in the procedure section

  20. Docker

    March 9, 2013 at 4:06 am

    Where is the Download link for the firmware, Pradeep

  21. sercour

    March 9, 2013 at 3:58 am

    Hi,
    Well, looks like interesting, but … where is the link for downloading it ?
    Thanks for your return
    Regards

    • Pradeep Neela

      March 9, 2013 at 3:04 pm

      hi, its there in the procedure section

  22. razman robert

    March 9, 2013 at 1:52 am

    Download link not working.Rooting package for this is working, please repair that link.

    • Pradeep Neela

      March 9, 2013 at 3:05 pm

      we have changed the links and are fully functional now

  23. norwyn bacs

    March 9, 2013 at 1:15 am

    where’s the link?

    • Pradeep Neela

      March 9, 2013 at 3:05 pm

      hi norwyn, the links are available now

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