Hi,   sorry for posting in the wrong Subforum, but I didn't find a M-Series Subforum. I bought a Pioneer Carrozzeria AVIC-MRZ99 on eBay.     It's a japanese Unit from an imported Car. The Problem is, you can't change the language to english... you can't change it generally :/    Does anyone know if I can install another firmware to this device?  Maybe this device was sold in EU or USA with another Name.   Hard to find some infos about it, all in japanese language :/   I tried sev