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FAIR,thanks for your replay ,j will tell you what heppen ,j waz looking for 12v near usb near s.kart there were is 6-8 pin to tek 12v for cooler,j conect worg with my tool scrow only a moment and the dm 800 make reboot and tell in display sim 84b multimedia but in this time j waz sker and take off the power supplay that its.now when j conect with dreamup just in the last it say ne 2 second stage found j try about 3 day evrything and the beter tool was the yours optiflasher j can conect it dm800 very good but when j put again the dm ,its tell the same thing dremultimedia error ,its the sim card dead????wellcome for any aide.....thanks