After downloading the three Utila packages from Station70, open the Utila Offline App. In the side navigation, select 'Recover' and follow the on-screen instructions step by step.
First, upload the Encrypted Keys JSON file and click 'Next.' Then, select the Wallet Data JSON file, followed by the Private RSA Keys file. For the Private RSA Keys, choose any backup key file, but ensure the file type is changed to .PEM.
Once all files are uploaded, click the 'Recover' button to complete the process.
Clicking the 'Recover' button will prompt you to choose a location on your system to save the file. Once selected, a CSV file named utila_recovered_keys_xxxx-xx-xx.csv will be generated. This file contains all of your wallet information.