iPad mini 2 downgrade error: Unsupported model.../Traceback (most recent call last)

[mikeytance]

Describe the issue I had followed the steps to downgrade the iOS, but the screen reminds me that " ERROR: normal_idevice_new: can't open device with UDID 00008020-001B65621104003A ERROR: Unable to discover device mode. Please make sure a device is attached. ERROR: Unsupported model... Exiting..." or "Traceback (most recent call last): File "./vieux", line 89, in ipsw.unzipIPSW(argv[2]) File "/Users/george/Desktop/Vieux-master/ipsw.py", line 153, in unzipIPSW pwndfumode() File "/Users/george/Desktop/Vieux-master/restore.py", line 22, in pwndfumode device = dfu.acquire_device() File "/Users/george/Desktop/Vieux-master/resources/ipwndfu/dfu.py", line 20, in acquire_device for device in usb.core.find(find_all=True, idVendor=0x5AC, idProduct=0x1227, backend=backend): File "/Library/Frameworks/Python.framework/Versions/3.8/lib/python3.8/site-packages/usb/core.py", line 1263, in find raise NoBackendError('No backend available') usb.core.NoBackendError: No backend available" after "./vieux -i iOS path"

![Uploading Screen Shot 2020-04-25 at 09.20.09.png…]()

Computer (please complete the following information):

• MacBook Pro Retina (early 2015)
• MacOS Catalina Version 10.15.4
• Python 2.7.16 / Python 3.8.2
• Vieux 1.0.1

iOS Device (please complete the following information):

• iPad4,4
• iOS 12.4.6

[flipped154]

try Catalina fix ?

[Dogtor-san]

anyone have the solutions? tried fix #1, catalinafix but no change

[RadicalR]

I got around this by installing homebrew for mac and running "brew install libusb"