A custom ROM is a modified version of Android built from the Android Open Source Project (AOSP). Independent developers backport newer Android versions to old devices by stripping down features, rewriting drivers, and optimizing memory.
For the Galaxy S2, the most active community for legacy devices is LineageOS (formerly CyanogenMod). As of 2026, unofficial builds of LineageOS 20 (which is based on Android 13) exist for the GT-I9100. samsung galaxy s2 android 13 free
Android 13 without Google Play Store is limited. Download MindTheGapps-13.0-arm-20241212.zip (the only ARM Android 13 GApps that fits the S2’s system partition). Flash immediately after the ROM, before first boot. A custom ROM is a modified version of
Fix: This is a kernel driver issue. Reboot to TWRP, flash the i9100-wifi-fix.zip file (available on the same XDA thread). This restores the proprietary Broadcom firmware. Android 13 without Google Play Store is limited
Note: The Samsung Galaxy S II (model GT‑I9100) was released in 2011 and shipped with Android 2.3.x (Gingerbread). Official Samsung support ended long ago and there is no official Android 13 build for this device. The steps below describe community-driven, unofficial approaches (custom ROMs, ports, and chroot/container installs), the technical requirements, risks, and safer alternatives.