iPhone disabled and recurring Error -39 in restoring it

Hello!

I accidentally disabled my iPhone because of 10 incorrect passcode attempts. I've been trying to restore it on iTunes via the "Restore" option. However, every time I download the update and try to restore my phone, I always get the following message: "There was a problem downloading the software for the iPhone. An unknown error occurred (-39)."

I've already tried updating both iTunes and my Windows computer and restarting. My phone also can't be erased via iCloud because my phone doesn't seem to be connected to the Wi-Fi connection at home. When I try to erase it, iCloud just says my device will be erased once connected to the internet.

Any leads would be extremely helpful. Thank you very much!