: On genuine iPhones (like the iPhone 8 or iPhone X), a "loader not found" error typically indicates a serious system failure. You can try to fix this by putting the device into DFU (Device Firmware Update) Mode and connecting it to a computer with Apple Devices/iTunes to perform a full system restore.
, this does not match a standard Apple consumer model number (which typically starts with an 'A' followed by four digits, like