I REALLY NEED SOME HELP, IM FROM PERU, I HOPE SOMEBODY HELP ME, IM TRYING TO UPGRADE MY N900 BUT I CANT DO THIS FROM THE X TERMINAL, EVEN FROM THE NSU, I REALLY WANT TO UPGRADE TO THIS NEW VERSION Maemo 5 PR1.2 (10.2010.19-1), BUT I FOLLOW ALL THE INSTRUCCION, BUT WHEN I PUT ENTER IT SAYS: Could not open lock fil /var/lib/dpkg/lock - open (13 Pemission denied)

PLEASE. WHAT CAN I DO?? U_U