Updating the LDW931 4G LTE USB modem Go to product viewer dialog for this item.

Updating a USB dongle is slightly different than updating a smartphone. Follow these steps to ensure a smooth process: 1. Identify Your Current Version

Phase 2: The "Cool Flash" Procedure

  • Method A (USB/OTG): Insert USB drive. Boot into bootloader (usually Volume Down + Power). Flash using fastboot or manufacturer tool. Monitor temperature every 60 seconds.
  • Method B (Recovery Mode): If you have a working OS, reboot into recovery. Select "Apply update from ADB" or "SD card." Avoid OTA while the OS is live.
  • Critical timing: A successful LDW931 firmware update takes 3 to 8 minutes. If it runs longer than 12 minutes, abort (power off) and investigate power supply or firmware version.

Method 1: Using the Reolink Client Software

The Verdict

Manufacturer Repositories: If your device is branded (e.g., KuWFi or Tuyung), check their official support pages.

Q: Will this update void my warranty? A: No, official firmware updates from the vendor are mandatory for warranty support. Running outdated firmware may actually void coverage if a known bug damages the hardware.

  1. Ensure the drive is placed on a hard, flat surface (not a carpet or blanket) to allow airflow.
  2. If using a USB extension cable, remove it and plug the drive directly into the PC. Voltage drops over long cables can cause the drive's power regulation circuitry to overheat.
  • tftp> binary; tftp> put firmware.bin