The Samsung Galaxy S2 (GT-I9100) never received an official Android 5.1.1 (Lollipop) update from Samsung; its official support ended with Android 4.1.2 Jelly Bean. To run Android 5.1.1 on this device, you must use custom ROMs developed by the Android community. Firmware Overview Official Version: Android 4.1.2 (Jelly Bean).
I9100XWMS3_I9100XXMS4_I9100XWMS3_HOME.tar.md5The "Legendary" S II: A Case Study in Community-Driven Device Longevity Samsung Galaxy S II (GT-I9100) gti9100 firmware 511 download upd
Samsung Galaxy S2 (GT-I9100) , the unofficial Android 5.1.1 Lollipop firmware update (specifically CyanogenMod 12.1 Resurrection Remix The Samsung Galaxy S2 (GT-I9100) never received an