H685-7628_v3.3.x Firmware Downloads

This page contains firmware levels for variants of the H685 4G listed below. Since 2025 there is a new hardware version ‘v2’ which has increased RAM 128MB. If your unit is v2 then it shipped with H685-7628_v5.10.x , which uses a newer linux kernel. (Click here to visit the firmware page)

  • H685t-W-P1

(These part numbers are found on the underside label of the router).

Changelog

H685-7628_v3.3.93 – April 2026

  • Two related security issues in the IPsec PSK handling have been fixed. The PSK could be briefly written to standard output during service start, where it could potentially be captured in logs or diagnostic exports. The runtime secrets file holding the PSK was also readable by local non-privileged processes on the device. Remote access to the VPN is not affected. Customers using IPsec VPN are advised to upgrade as soon as possible and to rotate the PSK on each device after upgrading.

H685-7628_v3.3.90 – March 2025

  • GPS TCP server can send DIO commands to set or get DIOs
  • Updated dropbear from 2019.78 to 2022.82
  • Fixed SNMPv3 issue which caused it to stop working on some configuration change.
  • Added event log to track attempts to authenticate to the server via, HTTP, HTTPS, SSH.
  • Changed the system functionality of admin user, so the SSH login account has the same password as the WEBUI admin account, changing one automatically updates the other unless they are explicitly configured to be separate.
  • Added minimum password complexity requirements
  • Improved the layout and added new features to WEBUI of Network > Firewall > Security page. Here settings for access control via management protocols to the router are configured. The Remote Access IP Whitelist function has been changed, now when enabled, this firewall rule is processed before all other traffic rules, and no new traffic rules are created in Network > Firewall > Traffic Rules.

H685-7628_v3.3.88 – January 2025

  • Added support for module RG200U.
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