Tracking down a legitimate is challenging due to the device’s age, but not impossible. Use archive services, verify checksums, and follow the step-by-step flashing procedure meticulously. Version 160 resolves most common stability issues and is the last reliable stock firmware for the W300 series. After updating, consider isolating the router on a separate VLAN or replacing it entirely if security is a concern.
Fixes vulnerabilities that allow unauthorized access.
https://archive.org/download/zte-zxv10-w300-update160/W300_V1.0.3.U16B.bin