An older version; some users report difficulty upgrading from V2 to V9 or issues with specific PPPoE configurations on older builds. Modified English Firmware:
The is an XPON Optical Network Unit (ONU/ONT) router, frequently branded by China Mobile or Huawei. Users often seek firmware reports or updates to address issues with signal loss, PPPoE configuration, or automatic synchronization after power outages. Firmware Overview: GM220-S XPON ONU Feature Details Model Name GM220-S (also referred to as China Mobile GM220-S) Firmware Versions V1, V2, V9 (V9 is the latest commonly sought version) Key Functionality Firmware Gm220-s
Single-band Wi-Fi 802.11 b/g/n (2.4GHz) with 6dBi antennas. Transfer Rates: Up to 2.5Gbps downlink and 1.25Gbps uplink. An older version; some users report difficulty upgrading
Upgrading firmware on a GPON ONT is a critical procedure. A power loss during this step will permanently destroy the device. Firmware Overview: GM220-S XPON ONU Feature Details Model
