It's been just a week Apple released the iOS 14.1 and today, we are here to inform you all that, iOS 14.0.1 - 18A393 has stopped being signed by Apple.
The latest version of iOS 14 which is iOS 14.1 as well as the iPadOS 14.1 is the only possible iOS versions you will therefore be able to restore IPSW file with iTunes.
So, for those who have iDevices listed below, you won't be able to flash any iOS 14.0.1 IPSW file using iTunes.
iOS 14.1 comes with support for the new iPhone 12 series release scheduled for the 13th of November 2020.
For those with supported devices listed below, they will be able to update to this version by going to Settings > General > Software update.
You won't be able to restore IPSW file with iTunes on these devices
iPad Mini 5 (WiFi), iPad Air 3 (WiFi), iPad Air 3 (Cellular), iPad 8 (WiFi), iPad 8 (Cellular), iPad Air 4 (WiFi), iPad Mini 4 (WiFi), iPad Mini 4 (Cellular), iPad Air 2 (WiFi), iPad Air 2 (Cellular), iPad 5 (WiFi), iPad 5 (Cellular), iPad Pro 9.7-inch (WiFi), iPad Pro 9.7-inch (Cellular), iPad Pro 12.9-inch (WiFi), iPad Pro 12.9-inch (Cellular), iPad Pro 2 (12.9-inch, WiFi), iPad 7 (WiFi), iPad 7 (Cellular), iPad Pro 2 (12.9-inch, Cellular), iPad Pro (10.5-inch, WiFi), iPad Pro (10.5-inch, Cellular), iPad 6 (WiFi), iPad 6 (Cellular), iPad Pro 3 (11-inch, WiFi), iPad Pro 4 (11-inch, Cellular), iPad Pro 4 (12.9-inch, WiFi), iPad Pro 4 (12.9-inch, Cellular), iPad Pro 3 (11-inch, WiFi, 1TB Model), iPad Pro 3 (11-inch, Cellular), iPad Pro 3 (11-inch, Cellular, 1TB Model), iPad Pro 3 (12.9-inch, WiFi), iPad Pro 3 (12.9-inch, WiFi, 1TB Model), iPad Pro 3 (12.9-inch, Cellular), iPad Pro 3 (12.9-inch, Cellular, 1TB Model), iPad Pro 4 (11-inch, WiFi), iPhone 8 (Global), iPhone 8 Plus (Global), iPhone 8 (GSM), iPhone 8 Plus (GSM), iPhone X (GSM), iPhone XS, iPhone XS Max (China), iPhone 11, iPhone 11 Pro, iPhone 11 Pro Max, iPhone SE (2020), iPhone 6s, iPhone 6s+, iPhone SE, iPhone 7 (Global), iPhone 7 Plus (Global), iPhone 7 Plus (GSM) and iPod touch 7