I have verified in focal. Installation generated FIT images on my Kria system, and reboot was successful. I cannot verify on hirsute though as I do not have a Kria image for that Ubuntu version.
$ apt policy flash-kernel flash-kernel: Installed: 3.103ubuntu1~20.04.3 Candidate: 3.103ubuntu1~20.04.3 Version table: *** 3.103ubuntu1~20.04.3 500 500 http://ports.ubuntu.com/ubuntu-ports focal-proposed/main arm64 Packages 100 /var/lib/dpkg/status 3.103ubuntu1~20.04.2 500 500 http://ports.ubuntu.com/ubuntu-ports focal-updates/main arm64 Packages 3.98ubuntu12 500 500 http://ports.ubuntu.com/ubuntu-ports focal/main arm64 Packages
I have verified in focal. Installation generated FIT images on my Kria system, and reboot was successful. I cannot verify on hirsute though as I do not have a Kria image for that Ubuntu version.
$ apt policy flash-kernel 20.04.3 20.04.3 20.04.3 500 ports.ubuntu. com/ubuntu- ports focal-proposed/main arm64 Packages dpkg/status 103ubuntu1~ 20.04.2 500 ports.ubuntu. com/ubuntu- ports focal-updates/main arm64 Packages ports.ubuntu. com/ubuntu- ports focal/main arm64 Packages
flash-kernel:
Installed: 3.103ubuntu1~
Candidate: 3.103ubuntu1~
Version table:
*** 3.103ubuntu1~
500 http://
100 /var/lib/
3.
500 http://
3.98ubuntu12 500
500 http://