How to uncorrupt a file?

To retrieve files from iCloud, follow the steps given below:

• Open the iCloud website (www.icloud.com) and log in with your Apple ID.
• Click on 'iCloud Drive' to access your stored files.
• Move through folders to find the file you want to retrieve.
• Select the file, then click the download icon to save it to your computer.
• Alternatively, if you're using an Apple device, you can access iCloud Drive through the Files app.

• Open iCloud on your device or go to iCloud.com on a computer.
• Sign in with your Apple ID and password.
• If you are using a computer, click on 'Account Settings' and then 'Manage' under Backups.
• Choose the device and backup you want to download.
• Click on 'Download' to save the backup to your computer.

Unfortunately, restoring WhatsApp chats without a backup isn't directly possible. Please check if any of the earlier backups have been stored in your Google Drive or any other cloud storage connected.

To find the app that you just deleted follow the steps given below:

• Open your App Store.
• Tap on your Profile and go to Purchase.
• Go to Not on this iPhone.
• There you get a list of all the apps that you deleted, from there you could restore the application.

To force Dropbox to sync follow the steps given below:

• Select the Dropbox icon and click on your profile.
• Select Preferences.
• Select Sync Tab and click Selective Sync.
• Uncheck the one that you want to force sync.
• Click Update.