Originally Posted by oligregoire
Thanks for the answer but I can't find anything for Iphone over the internet (aka. "program the HEX code for a Pioneer service remote into the iPhone" or "program iPhone as a a Pioneer service remote").
Well then, you'll have to improve your search skills, or get a new search engine!
There are lots of solutions out there for the iPhone/iPod Touch/iPad to be used as an IR type remote control. One of my favorites is iRule. Some others are the Griffin Beacon, the Peel Fruit, RedEye, etc... Again there are lots of 'em.
Here is a link to iRule: http://www.iruleathome.com/
And here's a link to an iRule tutorial for the IR learner for the iOS devices: http://support.iruleathome.com/customer/portal/articles/473957
Now, as you investigate the possibility of using a product like iRule, you will very quickly realize that this solution will require some of your time and money to implement. As I said in my earlier post, you will have to buy some hardware to be able to use a wifi - IP signal from an iPhone and convert it to an IR signal that your Pioneer player can respond to.
At the end of the day, it may well be more cost effective for you and less time consuming to simply buy a cheap Harmony IR remote and use the Logitech/Harmony data base for the codes and to make the change.
But, in regards to your original post; "Do you know if it is possible to make the dvd part of the player region free with an Iphone? I know it is possible with some remotes but with an Iphone?", yes it is possible to access the player via IR command using an iPhone.