Last Updated: October 10th, 2012

Google's chief release engineer Jean-Baptiste Queru just announced via the Android Building group that version 4.1.2 of Android is being released to the Android Open Source Project (AOSP) today.

The release follows Android 4.1.1, which was the final version of Jelly Bean, and is marked as minor. The build number, which we spotted in the logs yesterday, is JZO54K, while the AOSP tags are android-4.1.2_r1 and jb-mr0-release.

It's also a good time to bring up the fact that the LG Nexus prototype that we saw yesterday was also running 4.1.2. Today's announcement seems to add further credibility to that story.

Update #1: 4.1.2 has already started rolling out to the Nexus 7, though mine doesn't see it yet.

Update #2: Since I mentioned seeing 4.1.2 with this very build number in the server logs, I'll throw in the devices that I saw running it, in addition to the Nexus 7 (this doesn't mean the updates for them are out now, but rather a good indication of what's to come):

  • Nexus S (though with JZO54H)
  • Galaxy Nexus
  • Xoom

Update #3: Per the update notification on the Nexus 7, Android 4.1.2 "improves performance and stability and fixes bugs." Not too helpful, but it's a start.

Update #4: Looks like we finally have launcher landscape mode on the Nexus 7!

Update #5: Flash 4.1.2 on the Nexus 7 manually if you haven't gotten your update yet.

Update #6: Issue 34212:  On Jelly Bean, failed to connect to WPA enterprise wireless is fixed in 4.1.2.



Images via EETimes

We're releasing Android 4.1.2 to AOSP today, which is a minor update
on top of 4.1.1.

As a note to maintainers of community builds running on Nexus 7: please update to 4.1.2 at the first opportunity. Future variants of  the grouper hardware will have a minor change in one of the components  (the power management chip) that will not be compatible with 4.1.1.

The build number is JZO54K, and the tag is android-4.1.2_r1.

Conley and JBQ

Jean-Baptiste M. "JBQ" Queru
Technical Lead, Android Open Source Project, Google.

Source: Android Building

Artem Russakovskii
Artem is a die-hard Android fan, passionate tech blogger, obsessive-compulsive editor, bug hunting programmer, and the founder of Android Police.
Most of the time, you will find Artem either hacking away at code or thinking of the next 15 blog posts.

  • Kaero

    Sexy :D

  • http://www.facebook.com/profile.php?id=290601972 Justin Crowley


  • Kobi

    Already installing on my nexus 7 via system update. Will be interesting to know what this update is all about

  • theentropic

    Can't wait for Bugless Beast to update!

  • Kenny O

    I heard this build adds a customization centre and something called Project Roadrunner.

    • John


      • Kenny O


    • Alchemy08

      Everyone heard that, if you were following the rumor mill, you nimcompoot....

      • AGWednesday


        • Al McDowall

          Best possible comment given the circumstances. Bravo sir (or madam)

    • http://twitter.com/misterE33 Mr E

      i approve of this :)

    • http://www.facebook.com/mika.saarela Mika Saarela

      That was a cruel hoax. But really, Google should make both of them happen ASAP.

      • http://www.facebook.com/profile.php?id=1745689461 Hal Motley

        I can't believe he lied to the Police. Does Artem have a jail here?

    • Logan

      No, that's for the future release of "Key Lime Pie" aka 4.2

      • Kenny O

        Dam, you must have a reliable, long time source to be privy to information like that.

      • http://www.facebook.com/Shinakuma George Millhouse

        4.2 is still Jelly bean

      • David

        4.2 is Jellybean 5.0 is Key Lime Pie.

    • http://www.facebook.com/Shinakuma George Millhouse

      you heard wrong

  • Gr3m
  • http://twitter.com/xtcvapor uh what

    Have to say it... VZWbGnex complaints about updates in 3..2..1..

    • Dave Miller

      No complaints here...that's why we have devs.

      • sebbes

        Devs can only do so much.

    • AGWednesday

      No complaints here. I don't even know what the update does.

  • Tim

    Just got the OTA on an unlocked GSM Nexus. Enjoy the update in about 6 months, Verizon users!

  • Djones

    So finally a fix to the Nexus S reboot issue in Jellybean?

    • perfectlyreasonabletoo

      Wow, that's pretty pathetic. I guess this is why carriers like testing updates... maybe awful Google testing is to blame rather than carriers?

  • http://www.facebook.com/idan.yael Idan Yael

    When will our phones get it? Galaxy nexus in particular...

    • http://twitter.com/havens1515 Randroid

      If you're on Verizon, then it will arrive on your phone when you install a custom ROM that includes the update. (Or in about a year, whichever comes first.)
      If you're not on Verizion, I'd think it would be relatively soon.

      • http://www.facebook.com/idan.yael Idan Yael

        I'm not on verizion... waiting to see the first comments saying "Got it on my galaxy nexus"

      • http://www.facebook.com/Shinakuma George Millhouse

        again with exaggerations

        • sebbes

          He's not exaggerating. It's the truth.

  • pihlen

    According to this screenshot you will be able to rotate the homescreen


    • http://twitter.com/nimjepawan pawan nimje

      will it rorate for phones as well, GNex?

      • pihlen

        Sorry I don't know. I found the screenshot on reddit.

  • PIL

    No update yet shown on N7 for me

  • TechGuy21

    yay woot woot. i want tablet UI. i had to install a custom rom in other to enjoy it not cool

    • fixxmyhead

      no u didnt. im on stock rom and all u had to do was add a line in ur build prop and voila. u should follow the news more often or u will miss something like this

      • perfectlyreasonabletoo

        I tried this as well, it works very poorly. A lot of lag, especially in the app drawer. The modified Cyanogenmod launcher works much better, and I suspect the official update has similar adjustments to work properly.

  • Nick Ver Voort

    Hasn't hit my Nexus 7 yet, but I'm excited for rotating the homescreen!

  • m1lkm4n

    Guess who unlocked his nexus 7 and flashed cm10 yesterday... well, now I gotta wait...

    • skitchbeatz

      CM is usually fast about including 0.0.1 updates

  • Mark

    New revision of Nexus 7 with different chips incoming https://groups.google.com/d/msg/android-building/2rkEoKMnhzU/qaWFhk6v0cwJ

    • http://www.androidpolice.com/ Artem Russakovskii

      He said this in the announcement as well. Just the power management chip will be different, nbd.

  • Kaustubh Ghanekar

    Hope it fixes Storage media bug... Since release of JB, I haven't seen music in my music player....

  • RBI411

    The wait for these things is always aggravating. I just wish it got pushed to everybody.

  • count derpula

    the N7 can be used in landscape mode if you use nova launcher

  • http://twitter.com/Rasty_Plus rasty++
  • http://www.facebook.com/profile.php?id=744916256 Ryles Malone

    This homescreen looks terrible. Does anyone else agree? Has Google not taken a look at an ipad or blackberry or Windows/Phone 8 at all? I guess I'm trolling because I don't like Android, but still, tell me you're not defending this home screen? 3 different app spacings on the home screen? Software home and back buttons to make the screen realestate reduced?

    • Pyngwie

      I agree with you...it looks terrible

    • http://www.facebook.com/nicholas.heisenberg Nicholas Heisenberg

      There's plenty of "real-estate". Maybe there should be no buttons anywhere. We'll just use mind control..

    • Freak4Dell

      I agree with you on the software buttons, but other than that, the homescreen(s) is perfect. I have no idea what you mean by 3 different app spacings. Everything looks evenly spaced to me.

      If you like your icon vomit iPad layout, then go use that. I get frustrated at the mere thought of that clutter, and I'm not even a neat freak.

  • Himmat Singh

    Can somebody please explain why the software keys are in the centre even in landscape mode? On m tab, having it in the corner is so convenient - you just use your left thumb. But with it being in the centre, you now have to use more effort. Poor from Google really.

    • Himmat Singh

      Also, how dumb of Google to separate the navigation and action bars? Already, the tab's got a small screen, and they do this. The software keys really look giant and horrible.

      • http://www.facebook.com/nicholas.heisenberg Nicholas Heisenberg

        Dude, you should really consider getting a life. They(and any other company)design things the way *they* think is best. There's an endless amount of factors going into these decisions, and the end result is meant to be what is best for everyone in general; they don't set out to create "Himmat Singh's dream tablet".
        It's funny how you(one man)feel so confidently qualified to say "how dumb of Google"--as if they had no idea what they were doing, and had no experience at this. The world's mobile market share seems to prove otherwise. I feel kind of sorry for people like you, who expect every company to read their minds, designing all their products precisely as you see fit, and nothing else. You must be sorely lacking a purpose/meaning in your life, or maybe you are just frustrated because you have all these "business ideas", yet no one will use them or take you seriously.
        Pay your dues and create something if you know better. If Google is as pathetic and stupid as you say--holy god!!-they're filthly rich; so if you put your brilliance to work, just picture the cash that you'll make!
        If you made a superior tablet or phone, and your vision/idea gained even 5% of the market share, I would happily apologize and applaud you; but most importantly, you wouldn't sound so out-of-line here. Say whatever you want, but just know that your less-than-humble attitude will get you nowhere in life. You don't always know better. If you don't like a product, it's perfectly fine to say "this product is terrible--for my tastes/needs." But stating that something or someone is stupid for not doing everything as you wanted-- it only makes your inability to think critically readily apparent to the rational majority.
        I'll keep an eye on the market for the revolutionary "Himmat-Tab".
        Good luck friend!

    • ThorsWrath

      They are in the centre so that you don't accidentally press them holding the device or while playing a game in landscape mode.

    • http://www.androidpolice.com/ Artem Russakovskii

      My theory is it's for gaming - I always press the damn keys with my thumbs.

  • http://www.facebook.com/profile.php?id=1745689461 Hal Motley

    I'll wait and see until it arrives on CyanogenMod.

  • http://twitter.com/MattScherbatsky Matt Scherbatsky
  • Mr Bean

    In the post you posted yesterday showed the about screen of the new nexus. It's build number was JellyBeanMR1. And this update has AOSP tag jellybean_mr0. The build that will be showed with the new nexus can be newer than this build

  • Matthew Fry


  • Ed

    Did they fix this http://i.imgur.com/oqHkX.jpg? I hope they did.

    • http://www.facebook.com/nicholas.heisenberg Nicholas Heisenberg

      Anti-spam mechanisms don't count as bugs. Should they "fix" the browser letting you know when a website has a revoked certificate?
      Should they "fix" the battery notifications to not let you know the phone will soon be forced off?
      I understand what you saying, but I don't know if that's a worthy of fixing. They should absolutely find a more elegant/quiet way to notify the user though.

  • mgamerz

    What about my gsm galaxy nexus?

  • Zelig

    Now I know I have a faulty power management chip :-)

  • tomtom547

    what is your steam id?

  • http://btwnworlds.tumblr.com/ Lou G

    3 AM I haven't gotten it yet :(

    I want to flash the update, but I'm scared I'd muck something up and end up with a brick.

  • http://twitter.com/nirvanaman_1985 sam

    I wonder whether this will fix the encrypted games problems or if we will have to wait until android 4.2/5.0 for that?

  • jammer

    I love being a cynanogenmod user. 4.1.2 on my SGS3.

  • http://www.facebook.com/iamakshaykakade Akshay Kakade

    Will Android 4.1 Be available to Xperia S ???
    Cause its a very powerful mobile and it is capable of handling that much of Awesomeness...!!!

  • bevardimusg

    I STILL haven't received this update on my completely stock, unrooted N7... what the hell is wrong? I live in Chicago, anybody else still waiting for this?

  • vnovomsate

    There is no Radio on jelly bean 4.1.2 !!! What a crap !!

  • BOB

    Hi all I bought a samsung Galaxy Note II with Gingerbird 4.1.1 . But my phone starts typing automatically and it does it so fast that you cant do anything even switching off is a big task. It opens so many applications at a time starts typing mailing calling all these thing togethe without touching the phone. Please somebady help me. i will be highly grateful.