Information
COWON D3 Pro firmware version 6.04 is for upgrading version of x.53/x.54/x.55.
If the version of the firmware installed on your device is lower than x.53 version,
please install the x.53 version first before upgrading to version 6.04.
Firmware version of your device can be checked at Settings > About D3 > Firmware version.
Warning/Caution
Back up any important data before firmware upgrade.
Please pull out the MicroSD card that was inserted in D3 before firmware upgrade.
Please make sure the AC adapter is connected during firmware upgrade.
Do not turn off the device before firmware upgrade is completed.
Power shortage might cause damage on the device, and the damage will not be covered by warranty.
Adjusted D3 Pro GUI and JetEffect 5
Software and system optimization
NOTE 1: JetEffect is not activated during fast forwarding.
NOTE 2: D3 Pro firmware is focused on multimedia functions. Internet access will be limited under D3 Pro
firmware. To use the Internet, please download and install Vx.55 firmware.
NOTE 3: For stable operation, FAT32 format is recommended. NTFS format is for playing big size media files
that are over 4GB. Please be sure to use ‘Safely Remove Hardware’ to protect file system before
disconnecting the cable from a PC after transferring data when using NTFS. For playing normal
media files, FAT32 is recommended.