Select Reboot System. The first boot may take 5 to 10 minutes as the system initializes. Troubleshooting Common Issues
Install a "Pico" or "Nano" Google Apps package specifically for Android 5.1 (ARM architecture) if you want the Play Store. Where to Download
Search XDA Developers for the "CM 12.1 GT-I9100" thread.
After your phone reboots into the new Android 5.1.1 system, here are some final checks:
: A classic choice, though some versions had reported bugs like non-functional Wi-Fi. The "CM12.1S" build is often cited as one of the better Android 5.1 options for this specific device.
To execute the firmware update, ensure your setup meets the following requirements:
