Rightly said but I want to be absolutely sure if I want to go firmware route. I have a DVD that plays my xvid files. The newer ones will be mkv so upcoming ones will be taken care of.
If you do not need to play region-coded BD's, DVD's on the DMP-BDT220 then don't bother with the enhanced firmware unless you want PUO, UOP removed and a few other audio, video features to be made available by the enhanced firmware.
Plus I heard every firmware release is paid and im not sure what benefits are made available in every update.
Yes, updates for enhanced firmware cost additional. However, you only update the firmware if you need to, (i.e.) Panasonic releases a new firmware for the DMP-BDT220 that contains some features you need and therefore you update with the Panasonic firmware blowing away your enhanced firmware OR your player updates automatically from Panasonic due to your BDP settings and your enhanced firmware is now overwritten. In these cases you will need to get the corresponding enhanced firmware version once again so that your region free BD, DVD playback continues to be available.
Keep in mind that Panasonic have released the DMP-BDT320 which is the successor to the DMP-BDT220 and are rather unlikely to keep releasing updates for the older model unless the stupid studios come up with some new mad DRM scheme on a new BD which then requires a firmware update for the BD to play.