I have a Denon DVD 2900 (European version with SCART) which only plays Region 2 DVD's at the moment. I would like to make it multi-region which I understand can be done using a firmware upgrade. I have found a file on an italian site which is said to do this (by burning it onto a CD). It can be found here: www.afdigitale.it/ (navigate to firmware>DVD video> then select Denon 2900. The file is named PDH29VND.CPN Some other sites also point to this source. It has been quoted that this upgrade will also enable PAL progressive scan although this feature is not that important as I have an Hitachi 42PMA400E which uses ALIS interlacing. Has anyone got any experience of this upgrade? Does it cause any problems and will it void my warranty? It would be really useful if I could play Region 1 DVD's on the player as there are so many early releases around.