Then what would be the point of the USB port? To recharge it?
It seems like it use USB port as power source while it updates to newer firmware. hmm.. interesting.
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*Firmware update:
sky3DS+ will come with the newest firmwareV4(FIRMWARE_VERSION=4 in the settings.txt, you don't need to do any update at the moment), we will keep it updated on our site if needed.
1.Download the updated firmware.bin from sky3DS.com, and copy it into the root directory of your microSD card.
2.Insert your microSD card into sky3DS+, connect your PC and sky3DS+ with a USB cable(come with, which can also work as a USB Adapter once connection built).
3.The LED red light will turn on for 10 seconds, then turn to the green light and keep flashing for 10 seconds, once the light turn off it means the sky3DS+ has been updated successfully.
Alert: Never unplug the USB cable while the green light keep flashing, it might damage your sky3DS+ card!
4.Delete the firmware.bin file in your microSD card
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but there is no new firmware yet (obviously) so nobody knows if there will be.
If they have any sense they will fix FAT32 issue first..