ZIP file support for nRF Connect FOTA

[mchartier]

While testing FOTA upgrades it seems ZIP files are not supported by the iOS Device Manager app. Here is the error when I select dfu_application.zip in the Device Manager app:

Is this only a limitation with the Device Manager app? Or is this also a limitation with the firmware? Maybe I am missing some build configuration to enable this feature?

Also related to this, I noticed the size of the ZIP file is the same as the BIN file. It appears the ZIP file is created with compression disabled. Is this intentional or a bug? 

My environment:

nRF Connect 2.1.0
MacOS 13.0 on M1
Device Manager 1.2.8 (4)
SDK project: zephyr/samples/subsys/mgmt/mcumgr/smp_svr

[Hieu]

The compressed file will need to contain both the .bin and the manifest.json, just like the auto-generated one. The nRF Connect Device Manager at least need the data from the manifest file to work.

The key issue is that your Bluetooth transfer time will not improve, because the file will be decompressed at the phone, not at the device. If you want to transfer compressed data, you will need to implement your own decompression feature into the bootloader/application. I am not sure that is trivial, or possible at all given the usual RAM and flash size. Decompression can take a lot of RAM.

[Hieu]

The app update went live two days ago. When you have the chance, please check if things work now

[mchartier]

Yes I can confirm the new app update supports ZIP files. Thanks.