Hi Luis,
Welcome to Box Community and glad to help!
You can only have one version of this file for Personal Free Accounts. I'm afraid you will need to re-edit the file to update its contents.
Note
With the exception of customers of Box Governance, the number of file versions that Box saves is limited. The maximum number of prior file versions you can access corresponds to your Box account type:
- Personal Free - 1 Version
- Personal Pro - 10 Versions
- Starter - 25 Versions
- Business/Business Plus - 50 Versions
- Enterprise - 100 Versions
Customers of Box Governance have the additional option of saving an unlimited number of file versions.
(https://support.box.com/hc/en-us/articles/360043697054-Accessing-Version-History)
Thanks for posting!