Using inference NPU demo

Hi all,

I am trying to execute the inference NPU demo on HiKey970.

Specifically, I obtained the demo code from the following link: https://communityfile-drcn.op.hicloud.com/FileServer/getFile/cmtyPub/011/111/111/0000000000011111111.20201210091606.89134814157089662349205341633422:50511210091010:2800:E491EF633BC420805890FA2B8627C2130D6A787B8472E30F007D89965F860ED3.zip?needInitFileName=true

I built the project with Android Studio 4.2 and run it on the device (HiKey 970).

The issues that I am facing are the following:
-  "Gallery" and "Take photo" do not appear on the top region of the app.
- Model hiai_noaipp.om is not found to be compatible with the device, a message pops up informing me, while running the demo.
- Both sync and async classifications do not work, a message suggests running them on the CPU.
- From the logs while running I can see the following messages among others:

I/buildmodel: [HIAI_DEMO_COMPATIBILITY_CHECK] ddk currentversion : (null)
E/buildmodel: [HIAI_DEMO_CHECKMODEL_COPM] Model name : hiai_noaipp.om
E/buildmodel: [HIAI_DEMO_CHECKMODEL_COPM] CheckModelCompatibility ERROR: 7
E/buildmodel: [HIAI_DEMO_BUILDMODEL] build model Failed! ret=7
E/RecyclerView: No adapter attached; skipping layout

I am attaching the full log as well.

In this repo I see the instructions "If the offline model is incompatible with the HiAI DDK, try version compatibility by using the mixed-model online building API." Is that the solution to my problem? How can I use the mixed-model online building API?

Is there some other resource that can guide me to run an inference on the NPU?