An iMars 7023B owner reported that after an update, the volume was extremely loud even at setting 01. The suspected cause was a mismatch between the amplifier chip (TDA7388) and the MCU’s audio attenuation table. The solution is to find an MCU file that explicitly matches the amplifier chip.
: The screen may go dark or show a progress bar for 2–5 minutes. Do not turn off the car engine during this time. Common Troubleshooting "No Update File Found" v7.5bt-fk-tp update
Manufacturers rarely provide public "papers" or direct download sites. You can usually find the latest files on: An iMars 7023B owner reported that after an
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