Android 4.1.2 released to AOSP

Keeping this short but sweet, Android 4.1 (Jelly Bean) has been a fundamental part of the Android ecosystsem's evolution. Since its release, Jelly Bean has improved on voice functions, some general features, optimisations, refinings and consistency. However, Android has never quite been perfect and with that comes Android 4.1.2; essentially it serves as a bug fix build for the AOSP-based Galaxy Nexus, Nexus S and Nexus 7 devices. The update also allows for the stock launcher to auto-rotate or be fixed into landscape mode.

AOSP, or the Android Open-source Project for those who don't know what it is, is essentially stock Android. This means this AOSP release is Jelly Bean without any OEM system tweaks which quite often means that it'll run faster. These AOSP ROM updates are bloatware-free and can be modified to serve as a base for custom ROMs like MIUI and CyanogenMod or can optionally be used as stock Android.

The build number for the update is JZO54K while the AOSP tags are android-4.1.2_r1 and jb-mr0-release. It is rumoured that LG's new Nexus device, if it exists, will sport this build version from launch, but we will have to wait and see what Google has planned as to what the new Nexus device will be should it not be manufactured by LG. Additionally, a bug fix build this late on in the year may indicate that the rumoured Android 5.0 (Key-lime Pie) is a long way off.

Source: Android Building

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23 Comments

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Thanks all for clearing this up for me. I understand this much better. I usually have no problem in installing updates or upgrades but with my Phone I am hesitant. This T-Mobile Comet specs suck and since it was free I never bothered to check. I am not even at 1Ghz CPU, only like 500Mhz.

AOSP is for geeks and only the Nexus devices have stable fully functioning CM10, every other rom has all kinds of issues.

Unless Google decides to control the Android ecosystem and control updates, Android updates don't matter.

Just bought my lady friend a Galaxy Nexus as it's only £250 from Amazon.
No carrier crapware, updates as they arrive, lovely.

Shame though as I'd just finished rooting ti and everything for her!

Wonder when this will be an OTA for the Galaxy Nexus, because right now it's for the tablets according to another article I recently read.

That would require rooting from what I understand, and my phone is just over a month old and still under warranty, so that is not an option until September of next year. So, I'll wait for the OTA.

Factory Images are from Google and therefore no rooting required. These images are the original build of Jelly bean 4.1.2 and I think does while your phone too (hence the name, FACTORY images).

These were to be used incase your phone can't boot up, you just flash this and you are back in business.

Here is what I have never understood about android. I have an android 2.2 Froyo powered phone and why can we not just use an update mechanism to upgrade to newer versions of the system ala Windows Update.

I wish this was different and is what make me so frustrated with the Android system overall but I will continue to use it. A shame really that you cannot just search for updates to the system and download.

flynempire said,
Here is what I have never understood about android. I have an android 2.2 Froyo powered phone and why can we not just use an update mechanism to upgrade to newer versions of the system ala Windows Update.

I wish this was different and is what make me so frustrated with the Android system overall but I will continue to use it. A shame really that you cannot just search for updates to the system and download.

Because Android is an open source project, Google don't write the drivers for most devices, nor could they be expected to given how many there are.

flynempire said,
Here is what I have never understood about android. I have an android 2.2 Froyo powered phone and why can we not just use an update mechanism to upgrade to newer versions of the system ala Windows Update.

I wish this was different and is what make me so frustrated with the Android system overall but I will continue to use it. A shame really that you cannot just search for updates to the system and download.

Rooting, installing ClockworkMod recovery and using ROM Manager for Android is a decent option and you should consider it. Froyo is obsolete and depending on your device, I'm pretty sure you could get Ice-cream Sandwich and Jelly Bean builds via the method I stated.

Android being open-source means that users don't have to rely on OEMs to push updates. For example, I've had Jelly Bean on my One X since August. It hasn't even been released for the device via HTC.

I actually highly encourage rooting even if it does void warranty. I did from day one, as did resident Neowin editor, Owen.

flynempire said,
Here is what I have never understood about android. I have an android 2.2 Froyo powered phone and why can we not just use an update mechanism to upgrade to newer versions of the system ala Windows Update.

I wish this was different and is what make me so frustrated with the Android system overall but I will continue to use it. A shame really that you cannot just search for updates to the system and download.

You can. IF your phone provider provides this option. They're known as OTA (Over The Air) updates. I had one about a month ago on o2 uk for ICS, many people on compatible handsets were given JellyBean as an OTA update (galaxy s 3), when o2 have finished 'testing' (adding their apps, sigh) it will probably be an OTA update too.

flynempire said,
Here is what I have never understood about android. I have an android 2.2 Froyo powered phone and why can we not just use an update mechanism to upgrade to newer versions of the system ala Windows Update.

I wish this was different and is what make me so frustrated with the Android system overall but I will continue to use it. A shame really that you cannot just search for updates to the system and download.

Because updating your Android phone from 2.2 to 2.3 is more like updating Windows 98 to Windows XP, and so on. Incremental updates (like 4.1.1, 4.1.2) are compatible if you have the current version.

The problem is the drivers. Google tried and tried to implement a default configuration (outside the Nexus ecosystem), but no company have followed it yet. Google promissed to punish this companies, but you know, the biggest one just lost 2 billion dollars...

DJ Dark said,
To be quite honest, that is one of the better screenshots of Android I've seen.

You need to get out more, that is a clearly customised mess

Teebor said,

You need to get out more, that is a clearly customised mess
Umm how the hell is it a "mess"? It's clean, simple and to the point.

Teebor said,

You need to get out more, that is a clearly customised mess

It looks a lot better in portrait. That left voice command/ Google Now bar only shows in landscape and clutters the home screen - which is also why I don't use landscape. Customizing was done to a minimal; only the clock and wallpaper are customizations that I've done.