Brilliant thread. I tried the APK downloader but I need to spoof an xperia device in japan. The latter is fairly easy with the extention but I'm not sure how to spoof an xperia device. If anyone can download this
Anyway, from point 5 on; simply edit build.prop in /system as root with a file manager ( he recommends ES ), and for the value ro.product.model, use one of the following, which correspond to Xperia devices in Japan :
Then reboot. Synchronization of music data does not work on all devices, however. He also recommends backing up the data in /obb often.
In short, bear in mind it's all a hack, and it does not always work. The Japanese can and will check IMEI sometimes, IP from where you're connecting and so on, the NSA has nothing on how things work here. So build.prop edits and such hacks can be utterly useless.