ok, fixed this issue...
1st step: software-packages unstage
2nd step: software-packages stage --iso --acceptEulas
now... downloading differnet rpms, but iso is mounted..never saw that..
Staging process completed successfully
3rs step: Command> software-packages list --staged
....
many rpms got installed..
finally:
Converting data as part of post install ....
[2021-10-28 09:02:25,151] : Installation completed successfully.
[2021-10-28 09:02:25,151] : Installation process completed successfully.
Command>