“Do you need to have the latest firmware to use sirius xm tuner? I bought the sxv300v1, hooked it up and the head unit says check tuner, tried to update firmware from version 1600 to 2000 but USB port won't read my thumb drive with the files. HeLp!”
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Hi James86, the 2000 version is the latest firmware and no need to download another firmware. You may refer to the link below to troubleshoot the issue: https://us.en.kb.sony.com/app/answers/detail/a_id/30955/p/37865,38218,69554,95351/c/65,66/kw/The%20car%20stereo%20does%20not%20recognize%20the%20satellite%20radio%20tuner. https://us.en.kb.sony.com/app/answers/detail/a_id/41736/p/37865,38218,69554,95351/c/65,66/kw/Music%20does%20not%20play%20when%20a%20USB%20mass%20storage%20device%20is%20connected%20to%20the%20car%20stereo%20or%20an%20error%20message%20is%20displayed. Regards, ~Erin
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