Upgrading an old repository

[unreal maple]

I had an old repository that I wanted to retake, and I don't know exactly in which version it is, it is about 8 months old, I would like to know the steps that you recommend to retake this project.

[meager moss]

Does the repo contain a backstage.json file? If so, that should tell you the current version

[unreal maple]

but how do I know which version corresponds here?

[meager moss]

That's not the backstage.json file. That is a package.json

[unreal maple]

here

from this, what kind of update do you recommend me to do?

[meager moss]

I would upgrade one minor version at a time. For example, from 1.8.3 to 1.9.x. Then from 1.9.x to 1.10.x, repeat.
https://backstage.io/docs/getting-started/keeping-backstage-updated/

[unreal maple]

to upgrade to a specific version what would the command be then?

[meager moss]

running yarn backstage-cli help versions:bump should show you what to do