Download the zip file from the link above and extract it to your desktop.
Monitor the progress bar; do not disconnect the cable or power off the computer during this window.
If you need the tool for legitimate purposes (e.g., repairing a MiFi device you own), here is what I recommend: marvell mifi tool v1 40 0 download link
Hold down the specific hardware boot-key combination (usually Power + WPS buttons simultaneously) while plugging it into the PC.
: Modifies the SIM-lock parameters within the modem configuration, allowing the hardware to accept SIM cards from alternative network carriers. Download the zip file from the link above
This usually indicates a faulty USB cable or a degrading flash chip inside the portable hotspot. Try lowering the transfer baud rate within the tool settings if the option is available.
Choose the appropriate COM port matching your Device Manager reading. : Modifies the SIM-lock parameters within the modem
After downloading the Marvell MiFi Tool v1.40.0, follow these steps to install and use the tool:
Check your USB cable connection or try a different USB port (preferably a USB 2.0 port on the back of the motherboard). Reinstall the Marvell USB drivers. Flashing Fails at 0%
Disconnect the device, reinsert the battery, and power it on normally. Important Safety and Risk Warnings
Connect the device to your PC using a reliable USB data cable.