When power is turned on the number that appears in the position
where elapsed time is indicated is the version of Firmware.
(To receive customer support, you must check the firmware version.)
You must upgrade firmware according to the version of your iAUDIO. For example, if current firmware version is 2.XX then upgrade with 2.XX version of firmware.
Same as following 3.XX and 4.XX versions.
If you upgrade with different version of each other, it cause the fatal damage of your player.