As of the latest check, the primary official source for the is:
In the world of portable 4G routers, the Tenda 4G630 has carved out a reputation as a reliable, cost-effective solution for mobile internet access, remote work, and travel connectivity. However, like any networking hardware, its performance, security, and stability depend heavily on keeping its internal operating system—the firmware—up to date. tenda 4g630 firmware update link
👉 https://www.tendacn.com/en/download/detail-4850.html (Global English) As of the latest check, the primary official