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I used a different firmware which does have NFS support in the kernel: https://github.com/avafinger/nanopi-a64-firmware - It's based on Ubuntu 16.04 (LTS)

DISCLAIMER: I did not check it for any unwanted software.
Hi, I have used the Ubuntu image provided by FA and did a dist-upgrade to the newest version. I want to upgrade the kernel so I will have NFS/CIFS support. I tried to install linux-image-generic but creating the initrd fails: Processing triggers for initramfs-tools (0.125ubuntu9) ... update-initramf...

When I open the Android wifi settings screen it keeps saying 'Searching for Wi-Fi networks...'
The wifi did work once.

Anybody have an idea how to fix this?