The unofficial CyanogenMod 12 custom ROM (Android 5.0.2 Lollipop) by Novafusion is compatible with all Galaxy S3 Mini variants such as i8190, i8190L and i8190N. The ROM is almost
stable and only issue is video taken by camera is green.
Requirements -
•Rooted S3mini
•
TWRP recovery installed
Step by step guide to upgrade Galaxy S3 Mini to Android 5.0.2 Lollipop CM12 ROM-
IMPORTANT: Back up everything (contacts,call logs, SMS, images, video , audio and other data) before installing the custom ROM. Also, DO NOT forget to make Nandroid back up from recovery.
Disclaimer: Please follow this guide at your own risk. Though we are putting our level best to provide this tutorial at its maximum perfection and accuracy, we can’t take responsibility for anything that goes wrong. This guide is
intended for technically talented users only.
1. Download CM12.0 for S3 Mini
HEREand Google Apps Package
HERE and copy both the zip files to the device’s SD card storage.
Note: Download recovery version of the ROM
2. Turn off Galaxy S3 Mini and reboot it into recovery mode. To do so, press and hold Volume Up, Home, and Power button few seconds.
3. From recovery, perform a factory reset (choose “wipe data/factory reset”) and wipe cache partition (choose “Wipe Cache Partition”)
4. Now, go back to the main recovery menu and choose “Mounts and Storage” -> Format /Data -> tap on Yes. Once done, go to “Advanced” menu
then choose “Wipe dalvik cache” and tap on Yes to confirm.
5. Now, select “Install Zip from SD card” option,and then tap on “Choose ZIP from from SD card”,browse the CM12.0 ROM (you have copied earlier)
and tap “Yes” to begin installation.
It take around 5 minutes for installing.
6. Do step 5 for installing Google Apps
package.
7. Once everything are done, go back to main recovery menu and choose “Reboot system now”option.
It may take around 5 minutes for the device to reboot.
Troubleshooting-
1. If your Galaxy S3 mini gets into the boot loop sequence (stuck in the welcome screen), boot your phone into custom recovery, perform ‘wipe
cache partition’ and from ‘Advanced’ option perform ‘wipe dalvik cache’.
2. If above procedure isn’t helped you,
remove battery from your phone and then re-insert it and follow the above installation instructions again.