How to Update Galaxy S2 GT I9100 with R25 AOKP Jellybean 4.1.1 Firmware

Jellybean 4.1 LogoBored of using the same looking firmware in your Samsung Galaxy S2 smartphone? Then we will be checking out on how you can install the new custom ROM firmwares which are not just high on the feature list but also comes with a host of add-on apps. So on the similar lines we will be checking out an all new custom ROM firmware dubbed as “R25 AOKP 4.1.1” custom ROM firmware which is dubbed as XXLPX firmware. You can refer to a detailed list of features which this custom ROM firmware comes along. The best part of this firmware is that it comes with the latest Jellybean 4.1.1 firmware base.

Please note that for applying this update you will have to root the device and with the help of below mentioned links you can root the device. If you feel that you have rooted your device before then you can check the same by downloading the “Root Checker” app from the Google PLAY Store. It’s not necessary that you will have to be on the rooted XXLQ5 firmware but you can be on any rooted firmware. We have also mentioned the screen captures on how this firmware looks like.

How to Update Galaxy S2 GT I9100 with Official XXLQ5 ICS 4.0.4 Firmware

How to Root Samsung Galaxy S2 GT I9100 on XXLQ5 ICS 4.0.4 Firmware

Caution: This update is strictly for the I9100 Model only and not for the devices which have the model number as I9100G. You can get the model number info from the “Settings > About Phone > Model Number”.

Once the device is rooted, the warranty will get void, to restore the lost warranty, you can revert back to the XXLQ5 firmware which will restore back the warranty.

Disclaimer: It will be solely your responsibility if any damage happens to your device caused due to not following of the instructions mentioned in this article. We should not be held responsible or liable for any damage done which is highly not possible if you follow all the instructions.

Download ROM Manager app from the Google PLAY Store, flash the Clock Work Mod recovery in your Galaxy S2. Data in your Galaxy S2 GT I9100 device should be backed up with the help of below steps. As soon as the backup of all the data is created, connect your device and place all the backup files in your computer. Once the backup files are copied to your computer, disconnect the same.

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

Screenshot_2012-08-14-21-36-13 Screenshot_2012-08-14-21-36-23 Screenshot_2012-08-14-21-36-34 Screenshot_2012-08-14-21-36-40

From the path “Settings > Applications > Development > USB debugging”, you will have to enable the USB Debugging Mode. Also not to forget the minimum  battery life should not be less than 40% or else there is a risk of device getting turned off in the middle of firmware update.

Once you are done with all the above mentioned steps, you can now head over to the next page where we have summed up a detailed guide on how to apply this firmware update in your device.

by Step Tutorial

47 comments

  1. I have baseband version XXLQ5. Am I able to update to Jelly Bean 4.1.1?

  2. hey Pradeep,

    Thanks for the wonderful and simple video showing how to update to JB. I have a question to ask you. I happen to have a i9100 (not G) rooted phone still on ginger bread 2.3.4. The firmware i am on is UHKG7, now can i directly flash to the AOKP+JB 4.1.1.1? or do i have to upgrade to a different firmware like XXLPX or something before flashing the new ROM? let me know

    thanks a bunch

    Ashish

  3. hey,i wonder when is the next update for this rom? not detect my external sd.
    is this rom the best?

  4. Nice Rom but I can not change location to save photos made with the camera to the external micro sd card. Is this a bug?

  5. I tried to switch back to SENSATION but it’s still under this firmware. Why so?

    AND When will there be a next, better firmware?

  6. i want to knw which device is best in respect of softwares and updates? Samsung galaxy s2 i91oo or i91oog??
    Thanks in advance

  7. jugraj singh mand

    My gs2 is roooted and updated to 4.1.1.
    Do u think i will still get official updates from google(android) ?

  8. Nice and fast, but…
    - No USB mass storage mode.
    - Mount points of internal and external SD cards are awkward. Gallery spots only internal cards, cannot play music from microSD (need alternative player).
    - Radio is not working, even if app acquired.
    - No call barring in settings.

  9. Hi pradeep…i tried to download the rom but it failed many times..can u help me plsss…

  10. I’m relatively new to this. However I have managed to sucessfully install this ROM by following the excellent instructions on this website. I love to look of this new ROM, however I have one small issue. I’m not sure if I did something wrong, but I dont seem to be able to access my external SD card anymore. None of my pictures are showing in the Galary and looking under ‘Storage’ it does not show my SD card. Is this a know issue or is there something I can do to resolve this?

  11. hi pradeep..this is the best rom..so damn clean!!!! thanx a lot..but i can’t install anything from the google store…dats’s so dissapointing..plz help..

  12. Is TV out running in this firmware?

    • Further, let me know if this ROM supports Touchviz launcher? I want to install Galaxy S3 weather home widget..

  13. Hi Pradeep,
    Can you recommend me the best Custom ROM based on Android 4.1 for Galaxy S2?

  14. i am using galaxy s2 and i updated android 4.0.3 at samsung service centre.
    and i have faceing a problem modem is not detect in my pc .
    pls help me

  15. I cannot connect to my wifi and without it I cannot use the rom as my connection to my phone provider is so rubbish, this is Ireland in the year 2012 and we cannot get a decent mobile service, it is like the dark ages here. Keep up the good work, looks like I shall have to go back the the nexus rom. Best wishes and thanks Wez

    • Hi my friend I feel so silly, after wiping the cash, and all that and reinstalling the rom all is well. The trouble which I had was authentication with my router/modem, I must have entered the password wrongly. I shall now settle down and have a good mornings fun with t rom. Thanks again for all you good work and please keep it going. Regards Wez

  16. hi i have some issues with the memory. i had gingerbread 2.3.4 at start den i upgraded to ics 4.0.4 which u had posted here and now when i did this which was unsuccessful.. unfortunately i had to downgrade to gingerbread 2.3.6 which is available here the memory is 16 gb by default but now it shows around 4 gb.. can u tell me how to fix this..????

  17. So.. anyone can tell me if works fine or not? I have problems to get apps because i bought this in china and i was wondering if this can be the solution

  18. Phone switches off by itself when using wi fi or playing hi def games

  19. I was a regular user of all our firmwares and updtaes untill i saw MIUI.. using MIUI since long! Now willing to come back on jelly bean. tell me is battery consumption better here or not as compare to MIUI?? This one is very nice as it support SIYAH kernel as well (love it)..

  20. I did all what you say but tf. remans in the 4.0.4 . I9100XXLQ5, kernel 3.0.15-I9100XWLP7-CL340913.

  21. I’ve installed and it was working smooth but have shortcomings, no video calling, could not see or access My Files folder. Am back to Sensation ROM 3.5.

  22. Any update on the battery consumption. Currently I am using Super Nexus custom ROM, it drains the abttery in 4 to 5 hrs.

  23. I have installed no GPS also not working

  24. Which is the best Super Nexus vs AOKP?

  25. Hi Pradeep!

    What are the features and not working application of this updates. I’m afraid to update without any reviews. Pls kindly share all your observation to this updates. Thank you…