GT-B5510L Heribatubara Sunday 5 March 2017 Instructions Extract (unzip) the firmware file Download Odin Extract Odin ZIP file Open Odin Tool Reboot Phone in Download Mode (press and hold Home + Power + Volume Down buttons) Connect phone and wait until you get a blue sign in Odin Add the firmware file to AP / PDA Make sure re-partition is NOT ticked Click the start button, sit back and wait few minutes GT-B5510LUBLE2_B5510UVOLE1_2.3.6 GT-B5510LVSKL1_B5510TFGKL1_2.3.6