The ZTE ZXHN H108N V25 is a surprisingly capable piece of hardware when you strip away the ISP-mandated restrictions. The patched firmware community has done remarkable work, turning a modest router into a tweakable, powerful little device.
Firmware for this device is typically released through two channels: original vendor releases and carrier-specific versions. ZXHN-H108N specification sheet - ComX Computers zte zxhn h108n v25 firmware original patched