Kernel update to Kernel linux-5.17.4-kirkwood-tld-1. (4 replies)

I'm trying to update my kernel following the instructions Updated 27 Apr 2022.

At the point 3 I get the error that flash-kernel is not installed:

root@debian:/boot# apt-get remove flash-kernel
Reading package lists... Done
Building dependency tree... Done
Reading state information... Done
Package 'flash-kernel' is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

what am I doing wrong ?