You must have TWRP (Team Win Recovery Project) installed.
Boot into TWRP by holding Volume Up + Home + Power. samsung galaxy s2 android 13 free
For most, this is a "just because I can" project. It’s a fantastic way to learn about Android's architecture, custom ROMs, and device longevity. It also breathes a small amount of life into a device that would otherwise end up in a landfill, turning it into a basic music player, a desk clock, or a simple Wi-Fi controller for smart home devices. Where to Find the Files You must have TWRP (Team Win Recovery Project) installed
While the Samsung Galaxy S2 is a legendary device, it was released in 2011 with Android 2.3 Gingerbread. Officially, its journey ended years ago, but thanks to the dedicated developer community, you can actually run on this vintage hardware. It’s a fantastic way to learn about Android's
It will be slow. Modern apps are heavy, and the S2's hardware will struggle with multitasking.
Download the LineageOS 20 build and a "BitGApps" package (if you want the Google Play Store). Step-by-Step Installation Guide (Brief Overview)