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1. Download the Touch Utility and Update file, and put them into a USB flash drive.
Remark: Because each user encounters a different issue, and needs different update file, please consult Sunany support team.
2. Find the Touch Utility program in the USB flash drive and install it.
3. Open the Touch Utility program, select Upgrade Firmware, then select the corresponding update file and click UPGRADE
4. Wait for the progress bar to finish executing and the upgrading completed.