Jelly Bean ROM Android 4.1.1 + Matr1x Kernel for Nexus S 4G!

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For Nexus S 4G this week, give this combo a try, Android 4.1.1 JRO03H build (built off sources) plus Matr1x kernel. Seems to run pretty solid and a lot better over the original Android 4.1 Jelly Bean ROM.

I think next week will be HUGE as far as custom Nexus S 4G ROMs built off Android 4.1.1 but for now, this should be one of the better combos to run on your Nexus S 4G. Let me know what you think!

Download:

Download Jelly Bean Android 4.1.1 ROM
Download Gapps
Download Superuser (u have to flash this after the ROM to get root!!!)
Download Matr1x Kernel

Credits – XDA

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Rating: 4.5/10 (2 votes cast)
Jelly Bean ROM Android 4.1.1 + Matr1x Kernel for Nexus S 4G!, 4.5 out of 10 based on 2 ratings
Categories: Nexus S 4G ROMs.

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35 Responses to Jelly Bean ROM Android 4.1.1 + Matr1x Kernel for Nexus S 4G!

  1. Greg Smith says:

    Max -

    Is there a new gapps download, to flash with the Jelly Bean ROM Android 4.1.1?

  2. Robb says:

    Getting ready to do this… for the first time lol. What is the “bfs” and “cfs” files? Do I need one or the other, or both for my 4G?

    • Greg Smith says:

      Get the CFS! All around best kernel mode.

      • Robb says:

        Thanks! Haven’t done it yet… trying to decide if I should take the plunge or just wait on the OTA. I’ve been building and repairing PCs for over 15 years, but haven’t ever done anything more to my Android devices than rooting once.

  3. Greg Smith says:

    This new ROM+Kernel package of Jelly Bean ROM Android 4.1.1 + Matr1x Kernel for Nexus S 4G, simply rawks! Very smooth, and of course, “butter!”

    Everything works and looks good so far — still looking for the best, working wifi. _v3_1-beta11 and _v3_1-beta14, still not working.

  4. TA283 says:

    I have ROM Manager and my Nexus is already rooted, and I have the Superuser app. If I download these files, will ROM Manager show me how to put this ROM on my phone?

  5. Jeremy Brooks says:

    So do I lose root with this?

  6. DARKHOLY says:

    i still cant receive mms messages

  7. Andrew Mahabee says:

    Cyanogen Mod has Jelly Bean for Nexus S 4G. It rocks. Buttery smooth and everything works: MMS, 4G (WiMax), GPS, etc. It is stable and battery life is great. Pair it with Matrix kernel 22.5 CFS. Just google cm10 and download it. It is also available in ROM manager but it requires a premium account. I just downloaded it off some website.

  8. darius wells says:

    how do i overclock with this rom? i have the Matr1x Kernel installed.

  9. Anthony says:

    I was very impressed at the speed of this ROM and also I love the layout of everything. Problems: I couldnt find the WiFi setup. I could turn my WiFi on but I couldn’t pick a connection or anything. :( Also this ROM lacks customization that I loved!!! Worse part because after coming from my previous ROM where you could customize every feature…this ROM is disappointing.

  10. Peter says:

    Love this site! Great instructions on how to get going with rooting / modding your nexus s phone. Regarding this mod, I’ve been testing it for the past couple of days, and it seems fairly solid. One thing that is a deal breaker for me is the inability to have my Exchange calendar sync to the calendar on the phone. I’ve attempted all kinds of ways to get my Exchange calendar to sync but have been unsuccessful. If someone knows of a way to get an Exchange calendar to sync, please reply. At this point, I think I’ll check out CM10 for my nexus s 4g to see how solid that mod is for the phone.

    • Peter says:

      I found the answer to my own issue: http://forum.xda-developers.com/showthread.php?t=1772111

      According to that site, I have to leave the Automatic Push setting on once I’ve set up the Exchange account on the phone. Afterwards, I can switch to sync to manual. When I set the sync to automatic (Push), my Exchange calendar appeared in the JB Calendar app, so all is good there. I will continue to test whether or not synchronizing continues to work after setting it back to manual. Additionally, I flashed the Paranoid Android ROM (http://forum.xda-developers.com/showthread.php?t=1668719) v 1.99, and it runs pretty well. I definitely like all of the additional customizations that is included in this ROM. Now that I have my work calendar again, I think I’ll continue to use this one for awhile.

  11. Osvaldo says:

    Hey on the superuser link, when you say to flash after ROM, do you mean after I install the rom, flash it, then intstall superuser?

  12. Peter says:

    I thought I’d share another finding with this ROM: I was unable to get GPS to work. I found the following thread which helped resolve the issue: http://forum.xda-developers.com/showthread.php?p=21445390

    I downloaded and flashed the Google Specific No-SSL v3.1 build, and GPS started working. If anyone else is having a similar issue with GPS, try flashing this build to see if that helps.

  13. Andrew M. says:

    For the latest CyanogenMod 10 builds that feature full Jelly Bean support go to: . There are daily updates that are all incredibly stable and offer great battery life. Everything works: MMS, 4G (WiMax), GPS, Bluetooth, WiFi, audio, camera, etc.

  14. Gb says:

    So, I have been using this combination of kernel and ROM on my phone for the last few days and have to say that I’m impressed. My phone actually works better than when it was updated with Sprint’s OTA update of ICS. Some things maybe you all can shed some light on. When I first loaded the ROM I noticed that the soft buttons would always be on. I thought this was a problem and reflashed everything. Same result. Two days later I decided to sit down and spend more time with it and noticed the buttons would stay on as a notification! Finally! My biggest gripe was not having an external notification on the phone. Now, is there a way to customize this notification? I don’t know if this is a function of the kernel or the ROM. Other than that, everything works fine (WiFi, GPS, Calls…). I stopped using exchange on my phone a long time ago as it just killed the battery so haven’t tested that.

    • Gb says:

      A week with this and I am still in awe at how well this combo makes my phone run. Had to enable exchange again for work and so far no issues. Battery life is good and speed is still great. The only downside I’ve come across is that I can not use third party live wallpapers. It will function for a short while and then revert back to the default android live wallpaper. Not a deal breaker so will continue to use this combo.

    • Gb says:

      Another interesting bit, ever since I started using exchange on my phone the mms functionality stopped working. The text will come in fine but no attachments. Not sure what caused this but since I noticed it after starting to use exchange then that’s all I have to go on at the moment. Any thoughts?

  15. David Williams says:

    Golf apps or anything to do with gps does not work. Went back to pixelrom which works better.

  16. robinson1 says:

    Does mms work on this rom?!?!

    • Gb says:

      Sort of, It’s been hit or miss. Sometimes works and other times no. I had to go back to stock as over time the rom seemed to become unstable. I would recommend the kernel though. Especially with the voodoo sound.

    • Tollkirsche says:

      I installed an app called Heywire free from Google Play Store and it lets me use SMS and MMS, all free. The only downside I’ve found is that they don’t have a Block Number feature, but otherwise it’s doing good for me.

  17. Tollkirsche says:

    I think I have this ROM on my phone, I’m not positive though. It says Build number full_crespo4g-userdebug 4.1.1 JRO03H eng.build.20120802.115717 test-keys. Model number is Full Android on Crespo4G. I’m having a bit of confusion, because I remember installing my ROM required holding down the power and volume up buttons until it rebooted into the menu. I can’t get my phone to do that again. Honestly, I hadn’t tried and didn’t notice until someone else was trying to do it. Did I mess something up? My phone’s been running fine besides the occasional freeze/reset.

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