Pi 4 had some non trivial changes, one I’d been aware of, the failure to get the wlan, since 3 but had not been able to find a clear solution for, the other was new, significant change in the ethernet device location. This led to total failure to detect the network devices in the Pi 4. These were both finally resolved thanks to a series of user data sets. Then I was, finally, able to snag the bluetooth device as well, which was very tricky, it’s a completely non standard bluetooth type, in a non standard location in the device tree, if the word ‘standard’ can ever be applied to ARM SOC device trees.
ARM saw some pretty significant changes and upgrades over last inxi versions, including much improved support for Android devices, though those changes depend on /sys and /proc not being locked down, which they usually are in current Android phones, though not always.
As usual, these upgrades for the Pi were 100% dependent on someone stepping up and providing the data, repeatedly, until the issues were finally resolved.