how to update sources?

[Ivakin E. Dmitriy 83432]

Dear all,

 

I need upgrade my OS to new release. But this computer not connected to
Internet and I don't have possibility to download new image. Also there is
no way to connect it to Internet in the future. How I can do it?

The next question is how I can install security patches with the same
conditions?

Thanks in advance!

 

Best regards,
Ivakin Dmitriy