- Save the attached firmware, "IUSBHD.SEF" into a USB thumb drive and keep the file name as it is.
- Insert the USB thumb drive into the device and power it up
- Wait till the screen on the device shows update "Vxx to v28", press the power button one time to proceed.
- Once the firmware update is completed, the unit will be off
-Remove the Auto Power Off to address the issue of power off during transferring or playing file.
The firmware is attached here.