Japanese conversion - where to start?

[Delboy]

area of particular attention worth looking into imo would be the

SWDL manuell - probably allows you to upload software, regardless of whether the disc is a
newer version
 SWDL ignore Region / VMC - probably allows you to upload software, regardless of the
locale driver.

Also if your doing updates to mmi please make sure that you have a 20amp min battery charger connected or have the engine running as a low voltage during update can create no end of problems