Hi Stephen,
replacing 'm68k' by one of the officially supported architectures (I
used 'amd64') will give a working URL. This does contain a workaround to
shut up the new warning:
"
If you were pointed to this chapter by apt you can prevent it from
continuously notifying you about this change by creating an apt.conf(5)
file named /etc/apt/apt.conf.d/no-bookworm-firmware.conf with the
following content:
APT::Get::Update::SourceListWarnings::NonFreeFirmware "false";
"
I suspect there has never been any firmware distributed for m68k in
non-free, so maybe the m68k port ought to set that apt config setting by
default in future releases ...
Cheers,
Michael