HOW TO FIX ERROR OF APP CLOSE MAIN! DURING START-UP ON ALL S60 PHONES, BY HENIC2SY

HOW TO FIX ERROR OF APP CLOSE MAIN! DURING START-UP, BY HENIC2SY
YOU CAN FIX THE APP CLOSE MAIN ERROR.
1) OPEN YOUR FILE MANAGER EXPLORER.
2) GO TO c:/system/bootdata & DELETE
'FirstBoot.dat'
3) TURN OFF PHONE AND TAKE OUT YOUR MMC CARD.
4) TURN ON PHONE AND PUT IN CURRENT TIME/DATE
5) WAIT FOR YOUR PHONE TO BOOT UP THEN TURN OFF THE PHONE AGAIN.
6) PUT BACK YOUR MMC AND TURN ON YOUR PHONE.