All backups are not hardware dependant so you can restore to any hardware.
That way all sounds a bit complex to me.
Just start with a fresh install and when you see the landing / onboarding page. The first picture on this page
Then just click restore from backup, it will then allow you to pick your backup file, then depending on the size of you HA install or speed of your hardware wait between 20 minutes to an hour and refresh the page. If still not done wait a bit longer.
Remember if you have set secure access (https) you will need to enter a different address in the browser.
So did it run out of space to store the backup or was it a network problem?
Are you trying to do this over wifi? Do you have plenty of storage where you are installing HA. It will need a minimum of 32gb, but I would allow double that or more. My proxmox VM is running 72gb storage, and I have to keep a check on the backup files stored locally.
Done and now working well.
Thanks!
The only problem I still have is on Frigate.
Frigate is running on a docker on the same NAS where HA OS is running but I have the following error message