Thanks for your responseTo do it yourself you would need Forscan and a ODBII programmer with MS/HS can bus switch. (The switch is important!)
Code to change tuner frequency is in the audio control module (ACM). Change the second digit to 3, leave the x's alone:
727-04-01 x*xx xxxx xxxx Tuner Region: 0=NA (North America), 1=GCC, 2=Japan, 3=Europe, 4=Asia Pacific
You will lose RDS function after this change. No way to have both as far as I know.