Before pursuing a risky firmware update, test your router with a high-quality USB wall charger and ensure it has proper ventilation. If the overheating persists, your unit may have a hardware defect, and it's best to contact the seller for a replacement. For those still determined to update their firmware, persistence and caution are your best tools. Keep checking official sources, reach out to support, and never flash an update from an unverified source.
Download the official firmware package (typically bundled as a .zip file).
directly into the USB port of a laptop or desktop computer. , as a temporary wireless drop will corrupt the installation.
Log in using your admin credentials (default username and password are typically admin ). Navigate to > System > Device Upgrade .
The (also known as the KuWFi or HOSAYA 4G LTE USB modem) is a plug-and-play Wi-Fi dongle used for portable internet access. Updating its firmware is essential for improving connection stability , security , and broadband performance . 1. Identify Your Login Credentials
Note down your APN settings and IMEI number.
Instead of plugging the dongle directly into a hot laptop or router, use a 30cm USB extension. This allows air to circulate around the entire casing.
How to update the firmware of 4G LTE Mobile Wi-Fi - MERCUSYS
: Newer firmware revisions include refined thermal profiles that reduce transmission power when the chip approaches its maximum safe threshold.
Even with the latest firmware, these small devices struggle with airflow. Try these hacks:
