Update steps:
Step 1: Download the firmware and extract it to your desktop.
Step 2: Connect the device to your computer using USB tethering. The computer will eject the corresponding drive.
Step 3: Place the extracted firmware into the corresponding folder.
Step 4: Disable USB tethering, disconnect the data connection, and then power cycle the device. Wait for the firmware to upgrade.

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Update logs:

20250619
1. Fixed the problem of inconsistent measurement names of Du and DT parameters
2. Fixed the problem of freezing in rolling mode
3. Fixed the problem of phase difference between 2 channels
4. The minimum frequency of the frequency response analyzer is changed to 10Hz
5. The frequency response analyzer adds a display of the sampling progress percentage
6. Fixed the problem of battery power jumping
7. Fixed the problem of abnormal shutdown