Any chance of upgrading to a S2 or 3 Tivo now ?

Hi
Previously whilst we had "service theft" issues surrounding any non official (i.e US Tivo) being used/hacked in the UK. Do we have the same limitations today ?
Is there anyone who has managed to mod a later unit to work in the UK ?
Was it down to a PAL/NTSC conversion problem ?
Previously whilst we had "service theft" issues surrounding any non official (i.e US Tivo) being used/hacked in the UK. Do we have the same limitations today ?
Is there anyone who has managed to mod a later unit to work in the UK ?
Was it down to a PAL/NTSC conversion problem ?