The screen flashed. The router rebooted. And there it was—the 5G icon, solid as a rock. 620 Mbps. She had won.
But the story doesn't end there. Three weeks later, the router forced another update. Why? Because the NR5103E’s modem firmware is signed to the IMEI of the device. Even after downgrading, the carrier’s network rejected the old firmware’s authentication handshake, eventually locking the SIM. nr5103e firmware
The Tale of the Disappearing 5G: How NR5103E Firmware Became a Double-Edged Sword The screen flashed