i tried to burn some roms on my sgs2 but each and everyone stucked on the "Boot.bin" or "nand write". i tried to burn it with a pit file i downloaded with the odin ("u1_02_20110310_emmc_EXT4") and it stucked on the "set partition". i took the battery off to start all-over and now it doesnt turn on in download mod. what to do???