Lg p970 hang on logo,

Please help, I have Lg P970, i was trying to send whatsapp messages today, so it was freezing and coludnt send message, so i removed the battery, so when i switch it on again, it can pass the LG logo, it hangs there. i have searched the forum and found many posts like flashing with this rom



P970AT-01-V10a-208-01-APR-13-2011+0



i flashed many roms, i even tried with smartflash tool, but still phone is stuck at lg screen, please help

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