Deleted ODK Build file

What is the problem? Please be detailed.
I formatted my computer and lost the ODK build file i was working on yet i want to make some changes. I had uploaded it on aggregate, is there a way i can download the file from aggregate and edit it in odk build ?

There isn't an easy way to go from XML to Build. You can try to go from XML to XLSForm but no guarantees that it'll work.