from GPON to EPON via firmware is a complex and often risky procedure. While some unofficial "exclusive" 2021 firmware files circulate online (often hosted on Google Drive ), this modification attempts to change how the device communicates with your Internet Service Provider's (ISP) Optical Line Terminal (OLT).
Select the specific 2021 GPON-to-EPON firmware file (often distributed in tech communities via Google Drive or MediaFire). firmware huawei hg8245h5 gpon to epon 2021 exclusive