Hi there,
We are running the Serial Lte Modem application on the nrf9160 DK and are testing the FOTA updates currently.
We do however have a few questions regarding this.
Within the mfw_nrf9160_1.3.2.zip file, there seems to be 3 different .bin files:
- mfw_nrf9160_update_from_1.3.1_to_1.3.2.bin
- mfw_nrf9160_update_from_1.3.2_to_1.3.2-FOTA-TEST.bin
- mfw_nrf9160_update_from_1.3.2-FOTA-TEST_to_1.3.2
1) What are the differences between the above files? (for example what is xxxx-FOTA-TEST.bin)
2) From the above file names it appears as if modem firmware upgrades can only be done sequencially? Is that correct? For example if we want to upgrade from version 1.3.1 to 1.3.7 (just an example), you will have to first upgrade to 1.3.2, then 1.3.3 .... until you reach 1.3.7. Or is there an alternative
3) what is the firmware.update.image.cbor file within the mfw.zip and when to use that?
4) From posts like this it appears as if FOTA updates can not be done from mfw version 1.3.x to 1.4.x. Is this true? Seems a bit odd that a LTE device will need to be retrieved from the field if new major features wants to be supported?
Kind regards
Frikkie
