nRF9160 FW update

[Simon zhuo]

Can nRF9160 update the FW through the LTE network?If not,how the nRF9160 update the FW？ 

[Bjørn Kvaale]

Yes, take a look at these two lines from the nRF9160 SiP website:

"The modem firmware is upgradable via secure, encrypted Firmware Over The Air (FOTA) updates."

"Arm TrustZone helps build solid and secure IoT applications that feature secure boot, trusted firmware updates and root of trust implementations without performance compromise."

[rkguy]

From a practical point of view, how is this done?

[Bjørn Kvaale]

Like this for example.