Follow this operation manual.
Update description of TF card firmware:
1. Prepare a TF card whose capacity is larger than the firmware size, for example, an 8GB TF card.
2. Place the firmware to be updated (CV-30_V3.0.20_20220427.bin) in the TF card.
3. Insert the TF card into the slot.
4. Restart the device.
5. Wait about 3 to 5 seconds. If the device beeps, the update is in progress.
Note: the firmware update time is about 30 seconds, depending on the firmware size and TF card quality, the update time will be different.