Join Date: Apr 2011
Location: Goshen, Indiana
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Thank you for your mail and support to FiiO. 1. It is using Linux system.
For X5III，no need to install extra driver. For M9, you may need to install a driver first. If there are local store in your city, you could have a try first.
FAQ- Technical support for M3K 1. How to upgrade the M3K? A：Incorrect operation might lead to system crash! Please read carefully before upgrading. Using Micro SD card to update: Copy the M3K.fw file to the root directory of the micro SD card (FAT32 format recommended). Insert the micro SD card into M3K and hold the volume “+” and power button at the same time until the micro SD card upgrade dialogue pops up then the upgrading will begin. It will automatically reboot when the update finishes. * Do not rename the firmware file. * Do not create a new folder to store the firmware file, and please just copy the M3K.fw file to the root directory of your micro SD card.