This helps the hardware "spoof" or identify itself correctly as a Nokia-compatible device to ensure the internet connection is established (moving from O1 to O5 state). Are you attempting to configure a third-party ONT for a specific ISP?
identifier used for Nokia (formerly Alcatel-Lucent) GPON (Gigabit Passive Optical Network) equipment, such as ONTs or ONUs. Context and Usage 3fe49362jjij50.bin
If you are trying to configure a modem via Telnet or CLI, you might see it used in commands like: cfgmib set OMCI_SW_VER1 3FE49362JJIJ50 cfgmib set OMCI_SW_VER2 3FE49362JJIJ54 This helps the hardware "spoof" or identify itself