TBox series, firmware upgrade method（USB flash drive）
1, format the TF card to FAT32, copy the update file to the TF card.
2, connect TBox to the charger's power, the red light is always on, insert the TF card
3, after about three minutes, the red light will continue to flash.
4、After the red light continues to flash for about two minutes, the TBox light will turn off
5, the box light is back on, the red light is always on, wait for 2 minutes and then unplug the TBox data cable to complete the upgrade
YouTube video tutorials
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