Jwin JX-MP332 - Manual (Page 29)

Color LCD MP3 w/ FM/Touch Pad V10M10_IM_EN_01182008
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OPERATING INSTRUCTIONS
Firmwear Upgrade
You can upgrade the firmware by using the Firmware Upgrade
Tool.
Note: to upgrade the firmware, need you master certain
computer knowledge, and before you upgrading read the
instruction carefully.
The improper upgrade may cause damage of the player,
maintain the player in the current firmware version unless the
functionality is not appropriate.
(01) When to upgrade for the first time, Connect the player
with PC via USB cable.
Upgrade method:
（02）Execute the next step, and click the view,
The PC finds Rock USB Device and requires installing the driver.