rows · against Android Apple AT&T China Court Electronics FCC Firmware Galaxy Galaxy . Sep 03, · Samsung Galaxy S III/GT-I From XDA-Developers Samsung Galaxy S III. Jump to: navigation, Samsung Galaxy S3 GT-i Detailed Specs on xbook.info; Stock Firmware. Samsung Galaxy S III Stock Firmware Collection; Samsung Galaxy S III (GT-I) Stock Firmware Collection (direct download, torrent, separate packages for modem/kernel) Device Type: Phone. Feb 06, · How To Flash Stock ROM Firmware On Samsung Galaxy S3 GT-I Step 1: To get started, download Samsung Galaxy S3 GT-I USB driver and install it in your computer. Once done, download the stock firmware of your device and extract the zip file to get the “xbook.info5” file as shown below. Step 2: Next, switch off your smartphone.4/5(3). xbook.info Samsung I Galaxy S3 android v (jelly bean) Repair stock rom - PDA AP Modem. Samsung has released a new update for Galaxy S3 I; Android Jelly Bean Official Firmware for users. While this update is available via. On this page, you will find the official link to download Samsung GT-I Stock Firmware ROM (flash file) on your Computer. Firmware comes in a zip package.