Look for the OEM (Original Equipment Manufacturer) downloads page.
1GE (Gigabit) + 3FE (Fast Ethernet) + 1POTS (Phone) + 1USB. WiFi: 2.4GHz single-band (802.11b/g/n). XPON: Automatic switching between GPON and EPON modes. 🔑 Default Login Credentials firmware gm219-s xpon
Decompile the web_cgi binaries. There is a hidden thread running on UDP port 55555 (not the usual TR-069 port 7547). It phones home to pdt.chinamobile.com or rms.chinamobile.com every 60 seconds. Even if you disable TR-069, this persists. The payload includes your PON signal strength, CPU load, and—more worryingly—the MAC addresses of the last 5 devices connected via LAN. Look for the OEM (Original Equipment Manufacturer) downloads
: Supports TR069 and OMCI , allowing ISPs to perform remote configuration, link monitoring (802.1ag Ethernet OAM), and software upgrades. Configuration and Maintenance XPON: Automatic switching between GPON and EPON modes
Look for files named GM219-S_Vx.x.x.x_UPGRADE_BOOTLDR.bin .