1.Download Odin HERE
2.Download install KIES Download latest USB drivers HERE
3.Download your own firmware coming from HERE extract it
4.Make shure That your phone is usually 70% charged
5.Turn off your own phone
6.Download mode samsung galaxy
7.Home"+"Power"+"Volume Down" buttons with the same. Release ones buttons soon after you carry your warning screen including at the screenshot given below.
8.press "Volume Up" button to confirm the action,
Download Selection Firmware Glaxy SII All In One :
Samsung | Galaxy S2 | GT-I9100 | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 | GT-I9100T | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (Korea) | SHW-M250L | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (Korea) | SHW-M250S | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (Korea) | SHW-M250K | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (T-Mobile) | SGH-T989 | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (Telus) | SGH-T989D | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 Chine | GT-I9108 | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 Epic 4G Touch | SPH-D710 | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 G | GT-I9100G | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 HD LTE (Korea) | SHV-E120L | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 HD LTE (Korea) | SHV-E120S | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 HD LTE (Korea) | SHV-E120K | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 LTE (Korea) | SHV-E110S | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 P | GT-I9100P| Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 Plus | GT-I9105 | Jelly Bean 4.2.2 | Download
Samsung | Galaxy S2 Plus | GT-I9105P | Jelly Bean 4.2.2 | Download
Samsung | Galaxy S2 | GT-I9100 | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 | GT-I9100T | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (Korea) | SHW-M250L | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (Korea) | SHW-M250S | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (Korea) | SHW-M250K | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (T-Mobile) | SGH-T989 | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 (Telus) | SGH-T989D | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 Chine | GT-I9108 | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 Epic 4G Touch | SPH-D710 | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 G | GT-I9100G | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 HD LTE (Korea) | SHV-E120L | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 HD LTE (Korea) | SHV-E120S | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 HD LTE (Korea) | SHV-E120K | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 LTE (Korea) | SHV-E110S | Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 P | GT-I9100P| Jelly Bean 4.1.2 | Download
Samsung | Galaxy S2 Plus | GT-I9105 | Jelly Bean 4.2.2 | Download
Samsung | Galaxy S2 Plus | GT-I9105P | Jelly Bean 4.2.2 | Download