I struggled to find this for the 3370, so decided to post it here for others that need it. In fact, I couldn;t find a reference for the 3370 but I used a sequence code for the 3350 that seemed to work:
There are two sequences below... I tried one then the other (i.e. both, one after the other) and it worked... so, not quite sure which one did it... try both and hopefully it works for you:
Region code hack posted by Pepe_arg, June 15 2006:
1) Press DVD.
2) Press STOP.
3) Press 0086000
Region code hack posted by JuanGoHer, August 05 2006:
Be sure the DVD tray is empty.
1) TURN ON the PHILIPS R3350H
2) Press <DVD> on the remote
3) Open the DVD tray
4) Enter the following digit sequence from the remote :
"008600" then "0" (selecting region 0=ALL, no messages displayed on the TV)
5) Press <OK> on the remote
6) close the DVD tray and then TURN OFF the PHILIPS R3350H
Hack procedure tested successfully !!