Explanation of the KT142A Voice Chip's Firmware Update Method

 The KT142X supports connecting to a computer via USB to download and update its firmware. The update software (exe) is provided by us.

Step 1: Connect to the computer via a USB cable—this essentially enters the firmware update process.

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The update interface is the USB-A port on the test board,

that is, the larger USB port, the one used for connecting a U disk.

At this point, the most noticeable phenomenon is that the busy indicator light starts flashing rapidly.

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You can also open the device properties in My Computer,

where an additional “USB Mass Storage Device” will appear.

Step 2: Open the update exe software we provide, click the “Update” button, then unplug the USB and power on again.

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