NSA325 - 5.5.1 kernel update problems (no replies)

Dear all,

I have been running Debian on my NSA325 for a while now (latest uBoot installed).

I recently updated from Strech to Buster using Bodhis rootfs with Kernel 5.2.9. This works like a charm; I didn't have to change any uBoot settings and was able to boot and run it.

However, updating the Kernel to 5.5.1 renders the machine unbootable. I followed bodhis instructions for the kernel update precisely (option 4a, with DTB file).

This never happened before (I conducted 5+ kernel updates under Stretch).

Any idea what I might have done wrong? Or has anyone else experienced issues with NSA325 and kernel 5.5.1?

Thank you in advance!