crankz Posted October 9, 2014 Report Share Posted October 9, 2014 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 several Testmode.key Files from this forum, but none of them worked for me. Just get the Error Message: CAUTION! TEST MODE FAILED STARTING! [Turn off ACC] Any Solutions to get it work? Thanks & sorry for my bad english Quote Link to post Share on other sites
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