: Use the script to modify the dump. For example, to change the version to V6.0.10N40 python3 ZTE_Firmware_Mod.py kernel0 V6.0.10N40 fw_mod.bin : Ensure the new fw_mod.bin
Instead, buy an unlocked ONT from a reputable supplier (e.g., Nokia, Huawei, or a generic XPON stick). They cost $15-$25. Your time is worth more than the $10 you save by trying to hack a $12 ONT. zte f601 firmware download patched