Shortly after the I8190XXAMA2 firmware update became available. Now the Android Jelly Bean 4.1.2 XXAMA1 for I8190 Galaxy S3 Mini smartphones is available for download. You can download the official I8190XXAMA1 firmware as zip package which contains the firmware file that you can flash to your phone using Odin tool. This is for those who have not received the update via Kies. Your first option is to update to XXAMA1 firmware using Samsung Kies. Here are the details of the update followed by download links:
Android 4.1.2 I8190 XXAMA1 Firmware Details
Regions: Austria, Belgium, France, Germany, Hungary, Italy, Spain, United Kingdom
Install Jelly Bean 4.1.2 XXAMA1 on Galaxy S3 Mini I8190
Step 1: Download the zip package: I8190XXAMA1_I8190OXAAMA1_DBT.zip
Step 2: Extract it to get the firmware file(s).
Step 3: Download and launch Odin3_v3.04.zip.
Step 4: Flash the firmware using Odin.
The process is pretty straightforward. We recommend you take the precautionary steps and be sure to backup your device.
For more detailed guide on using Odin: How to use Odin to flash stock ROM.