The "Download Failed" error is usually caused by either a network issue or a problem with the TF card.
First, please help us check your network connection by sending us a photo or screenshot of the WiFi Info screen. This will allow us to verify whether the printer is connected properly and identify any network-related issues.
If the network appears to be normal, we can arrange a replacement TF card for you.
We look forward to your reply.
fddfa859-e58c-4afb-8cd1-6abdecd8cdd1-wifi info.png