Hi Crogge To answer your question I just install FMRadio on my N900 HongKong PR1.3, plug the wired headphone. I notice there are two version of this: 2010.03.20 and 2010.03.60. I guessed the later was the latest so I tried it. FMRadio 2010.03.60 just simply crashes to the desktop. A reboot won't help. Without removing this version, I tried to install FMRadio 2010.03.20, but was anable to install. So I uninstall the 2010.03.60 version, install 2010.03.20 version, and it works without a reboot. I tried to scan to frequencies lower than 87.5 but NO, it can go no lower than that or higher than 108.0 MHz. I can not hit any Japanese broadcast with it anyway, neither on PR1.2 nor 1.3. I tried installing FM-Boost but it still does not help. After a reboot with both FMRadio and FM-Boost installed, nothing change: frequencies ranged between 87.50 and 108.00. I do not install Japanese locale on my n900 though. I just use UK locale with GMT+9 for time zone. Hope this post does answer you