Galaxy S3 (GT-I9300) Android 4.3 update begins rolling out
Download Android 4.2.2 ROM For Galaxy S3 GT-i9300 With Galaxy S4 Features | Redmond Pie
Update Galaxy S3 GT-I9300 To Android 5.1 Lollipop With CyanogenMod 12.1 Custom ROM - NaldoTech
How To Update Galaxy S3 I9300 With Official Android 4.3 Jelly Bean? - SamsungSFour.Com
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How to root Samsung Galaxy S3 GT-I9300 on Android 4.1.2 [Guide] | dotTech
How to update Galaxy S3 I9300 to Android 5.1.1 Xperia Z3 custom ROM
Download and Install Lineage OS 19 for Samsung Galaxy S3 (Android 12)
Install CyanogenMod 13 ROM on Galaxy S3 (Android 6.0.1 Marshmallow) - NaldoTech
Samsung I9300 Galaxy S III - Full phone specifications
Samsung confirms Galaxy S3 GT-I9300 and GS3 Mini won't see KitKat
Galaxy S III I9300 and S III mini won't be getting KitKat update - GSMArena.com news
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Update Galaxy S3 To Android 5.1.1 With Resurrection Remix ROM (GT-I9300) - NaldoTech
Install CM10.1 for Galaxy S3 i9300 (Android 4.2.2) - ITek Blog
Samsung Galaxy S3 GT-I9300 international model gets Android KitKat update - NotebookCheck.net News
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Android 7.1 Nougat for Galaxy S3! [GT-i9300][CM14.1 ROM] - YouTube
GT I9300 How to Update Install Android Lollipop 5 1 CM 12 1 Samsung Galaxy S3 - YouTube
Galaxy S3 I9300 Gets Updated to Android 4.2.2 Jelly Bean with AOKP Build 6 ROM [How to Install]
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How to Manual Update Galaxy S3 GT I9300 with Lollipop Android 5.0 OS - Guide