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Samsung Galaxy S3 Android update: latest news

Update: Marshmallow ROM released, CM13 confirmed

Authored by: Scott Adam Gordon — 3 days ago

The Samsung Galaxy S3 has received an update to guard against the Stagefright exploit for Sprint and AT&T customers, but other major carriers are yet to issue a fix. Android Marshmallow will not officially be coming to the Samsung Galaxy S3, but a ROM is available. Find out everything we know about the latest Samsung Galaxy S3 Android update below. 

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The Samsung Galaxy S3 has received the Stagefright exploit fix on some networks but won't get Marshmallow. / © ANDROIDPIT

Android Marshmallow on the Samsung Galaxy S3

Samsung does not have any plans to bring Android Marshmallow to the Samsung Galaxy S3, which should come as no surprise, given that the device didn't receive Lollipop, either.

An unofficial Marshmallow ROM has appeared through the XDA Developers forum, but its stability is questionable and updates are uncertain. We would recommend using it with caution.

CyanogenMod has also committed to bringing CyanogenMod 13 updates, based on Android Marshmallow, to the i9300 model of the Samsung Galaxy S3. A timeframe for the update has not been given, but it can be expected to be sluggish and buggy from the outset. Prepare to wait quite a while before anything stable emerges.

Android Lollipop on the Samsung Galaxy S3

While the Samsung Galaxy S3 remains stranded on Android KitKat across the board, an update for Sprint customers bearing a security path for the Stagefright exploit brings devices up to version L710TVPU0AOH1 and should have been received by all Galaxy S3 handsets now. If you haven't been prompted to update already, go to Settings > About Phone > Software update to download the patch.

Though AT&T issued a security update for the S3 on August 18, updates from the other major US networks are still to come. We don't have an ETA yet, but we will update this page when we learn more.

Samsung has officially ruled out the possibility of a Samsung Galaxy S3 Android Lollipop update via Twitter. It's no surprise, given that the Galaxy S3 is now three years old, but those of you who were expecting the Galaxy S3 update on Sprint, Verizon, AT&T or T-Mobile will be disappointed.

There is a custom version of Android Lollipop available for the Galaxy S3 (GT-I9300), however, which you can download now. 

How to install Android Lollipop on the Galaxy S3

Over at the XDA Developers forum, Android developers JustArchi and Moster2 have created a CyanogenMod 12.1 build based on Android 5.1.1 Lollipop for rooted Galaxy S3 (GT-I9300) owners.

It's a work in progress, but all of the major device features are up and running, including Lollipop additions such as the Material Design aesthetic and lock screen notifications. If you'd like to install it in its current state, check out the CyanogenMod Wiki entry for the GT-I9300.

We'll let you know about any other Galaxy S3 Android Lollipop developments as we get them. For now, if you just want to pretend your S3 has Lollipop, find out how to get Android 5.0 Lollipop apps, UI and features on your phone without root

Have you tried flashing a custom ROM on your Samsung Galaxy SIII? Let us know in the comments below. 

Originally from the UK, Scott graduated in Popular Music Studies at Newcastle University and attributes most of his success there to his beloved Samsung Galaxy S2. A dedicated Android fan, Scott has never owned an Apple device, of any kind, and doesn't see this changing anytime soon.


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  • Hi is there any updates for S3 I9301L?

  • I notice Android Phones will not up date on the OS like iPhone does on the iOS when it is just iPod for I still have my Samsung Galaxy S3 which don't up date no more since it just iPod like it did on my iPhone 4 after it was iPod since 2013

  • hey guys is it necessary to root my S3 before upgrading jelly bean to kitkat ??

  • hey guys is it necessary to root my S3 before upgrading jelly bean to kitkat ??

  • I have upgraded my Galaxy S3 to CM12.1 Android 5.1.1. Everything seems to work correctly but I can't connect to a PC (Windows 10) through a USB lead. The PC recognises that the phone is connected and tries loading the driver, but Device Manager reports it under Universal Serial Bus Controllers as "Unknown USB Device (Set Address Failed)". Any ideas?

    • Download Samsung keys on your computer it should have all the necessary drivers. Try changing to a different USB cable, the stock one works best if it is in good repair. Are you connected to a USB 2.0? Try to connect to a different port with USB 2.0 support.

  • Hi, I have installed android on my S3 i9300 and everything was working fine but bluetooth. Didnt worked. So I have to reinstall the original rom. It connected to my car but the sound was horrible. Anyone with the same problem?

    • Digi Tair 2 months ago Link to comment

      I do have the same problem on my Galaxy S3 with the CM 11 Rom installed. To solve this, I need to switch my network from 3G to 2G.
      Hope this will do the trick for you also.

      • So, you have installed android 4.4 kitkat and to solve the problem with bluetooth not working you switch the network from 3G to 2G?
        So you will get less speed on internet but bluetooth working properly?

  • i have it installed with galaxy s3 running 5.1 for the last month it works good!

  • I have s3 (19300) with version 4.3.when I update then told me "you have the last version".what can I do. .can I update to lollipop version

  • Hongdovan 4 months ago Link to comment

    Sao Samsung galaxy note2 Việt Nam chưa có bản 5.1 vẫn 4.4.2

  • i have s3 I9300 with old version 4.1.2 when i update they told me " you have the last version " sos

  • Dr.jacky 8 months ago Link to comment

    My phone is Glaaxy S3 I9300 International, and when restore backup from my sdcard, it show a error :
    "error while flashing boot image"

    • Just make a backup of your current setup, and copy the Android 5.0 files over your backup. The final step of flashing the kernel writes over the current boot image anyway.

  • i have s4 gti9515 lollipop not available my device

  • Hello, I have Samsung Galaxy S3 SHG-i747 (AT&A) now i have to updated my Kitkat 4.4.2 to Lollipop updated. what should i do ? is there any chance damage my phone?

  • this rom works for sprint s3 L710

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