Connect the LDW931 via USB-to-TTL adapter. Send the command:
AT+VER
Record the output (e.g., V2.3.1 or LDW931_FW_2023).
Keeping your LDW931 firmware updated can fix bugs, improve accuracy, and add new features. But a bad update can sometimes cause issues. Follow these steps for a better, trouble-free update. ldw931 firmware update better updated
| Test Case ID | Scenario | Expected Outcome | | :--- | :--- | :--- | | TC-01 | Successful Update | Device downloads, installs, and boots into new firmware within 5 minutes. | | TC-02 | Power Loss during Flash | Power cut during Slot B writing. On power restore, device boots into Slot A (previous version) safely. | | TC-03 | Corrupted Payload | Device detects checksum mismatch, rejects update, and remains on current version. | | TC-04 | Wrong Signature | Device refuses to install unsigned/hacked firmware. | | TC-05 | Rollback Mechanism | New firmware crashes on startup loop. Bootloader reverts to Slot A after 3 failed boots. | Connect the LDW931 via USB-to-TTL adapter
With the device powered off:
To remain better updated, do not rely on memory. Implement these practices: Keeping your LDW931 firmware updated can fix bugs,
Every quarter (March, June, September, December), manually check the manufacturer’s changelog.