Wi-Fi Transfer is the easiest way to transfer files from a computer to your iPhone or iPad and vice versa.
Now, you can see the files from Documents on your computer. You can select several files or folders and click Download to get them from your iPhone or iPad to your computer.
To upload a file to your iPhone or iPad, click Upload Files button and select the files or just drag & drop them into your browser. As soon as the files are uploaded, they'll instantly appear on your iOS device.
Once you're finished, please tap the Disconnect in Documents on your iOS device or close the web page.
Note: If you'd like to use the IP address (http://192.168.5.92) or your device's hostname (e.g. http://user-iphone.local) instead of the code, please enable WebDAV in Documents Settings > WebDAV and copy the IP address to your browser.
To use QR-code to establish the connection, click Show QR-code to Scan > open the Camera app to scan the code and tap Open in Documents prompt message.
You can also refer to this Windows Support article. For Vista 32-bit system, you can use a popular WebDAV client NetDrive or the Cyberduck app to connect to the device.