dfu-util / Tickets / #183 M3 2023 Macs are not showing with dfu-util list command

Tormod Volden - 2023-11-20

What is KIS? In any case, I don't think the mac DFU mode has anything to do with the USB standard DFU device specification.

If you install usbutils from homebrew, does it show up in lsusb?

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- Zohaib J - 2023-11-20
  
  Yes it is showing in lsusb.
  
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- Zohaib J - 2023-11-20
  
  Check these screenshots please.
  
  283799506-1c968fb6-a856-494c-b35c-336a5c8d1104-2.png
  
  283799524-6058c5bf-11fd-4e86-a948-2510d4aeee1f.png
  
  283799882-5cec6b3b-df43-47e1-bd31-eb961b9b1285.png
  
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Tormod Volden - 2023-11-20

What is the verbose output in lsusb, using the -v option (and the -d option to limit it to the device in question)? Please copy-paste the output here.

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Tormod Volden - 2023-11-20

The USB DFU standard requires a USB interface with:

bInterfaceClass 254 Application Specific Interface bInterfaceSubClass 1 Device Firmware Update

and a specific descriptor:

Device Firmware Upgrade Interface Descriptor: bLength 9 bDescriptorType 33

If those are not present, the device is not USB DFU standard compliant. It can still be some kind of "Device Firmware Update" via USB, but e.g. a proprietary protocol.
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- Zohaib J - 2023-11-20
  
  With the help of libimobiledevice libirecovery I can fetch the device. I know its a different project but that is just for the reference.
  
  Screenshot 2023-11-20 at 3.26.30 PM.png
  
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Tormod Volden - 2023-11-20

Please copy-paste the text output from the verbose output in lsusb, using the -v option (and the -d option to limit it to the device in question), like lsusb -v -d 05ac:1881 so that we have it for reference.

Screenshots are not searchable and not helpful for the visually impaired.

It looks like Apple doesn't even call it "DFU" in the low-level details, but "USB Debug".

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- Zohaib J - 2023-11-21
  
  lsusb -v -d 05ac:1881
  
  USB:
  
  USB 3.1 Bus: Host Controller Driver: AppleT8103USBXHCI USB 3.1 Bus: Host Controller Driver: AppleT8103USBXHCI Debug USB: Product ID: 0x1881 Vendor ID: 0x05ac (Apple Inc.) Version: 4.00 Speed: Up to 480 Mb/s Manufacturer: Apple Inc. Location ID: 0x00100000 / 1 Current Available (mA): 500 Current Required (mA): 100 Extra Operating Current (mA): 0 USB 3.0 Bus: Host Controller Driver: AppleEmbeddedUSBXHCIFL1100 PCI Device ID: 0x1100 PCI Revision ID: 0x0010 PCI Vendor ID: 0x1b73
  
  Last edit: Zohaib J 2023-11-21
  
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Tormod Volden - 2023-11-21

Thanks but unfortunately that is not from the real lsusb from the usbutils package. It looks like you are using the one from the "lsusb" package, which should have been removed from the HomeBrew repository in my opinion because it is just a lousy wrapper around a macOS command, and doesn't provide the same informtion as the real lsusb.

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https://formulae.brew.sh/formula/usbutils

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lsusb -v -d 05ac:1881      

Bus 000 Device 001: ID 05ac:1881  
Device Descriptor:
  bLength                18
  bDescriptorType         1
  bcdUSB               2.00
  bDeviceClass          255 [unknown]
  bDeviceSubClass       255 [unknown]
  bDeviceProtocol       255 
  bMaxPacketSize0        64
  idVendor           0x05ac 
  idProduct          0x1881 
  bcdDevice            4.00
  iManufacturer           1 
  iProduct                2 
  iSerial                 0 
  bNumConfigurations      1
  Configuration Descriptor:
    bLength                 9
    bDescriptorType         2
    wTotalLength       0x0043
    bNumInterfaces          1
    bConfigurationValue     1
    iConfiguration          0 
    bmAttributes         0xc0
      Self Powered
    MaxPower              100mA
    Interface Descriptor:
      bLength                 9
      bDescriptorType         4
      bInterfaceNumber        0
      bAlternateSetting       0
      bNumEndpoints           7
      bInterfaceClass       255 [unknown]
      bInterfaceSubClass    255 [unknown]
      bInterfaceProtocol    255 
      iInterface              0 
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x81  EP 1 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x01  EP 1 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x82  EP 2 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x02  EP 2 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x83  EP 3 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x03  EP 3 OUT
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4
      Endpoint Descriptor:
        bLength                 7
        bDescriptorType         5
        bEndpointAddress     0x84  EP 4 IN
        bmAttributes            2
          Transfer Type            Bulk
          Synch Type               None
          Usage Type               Data
        wMaxPacketSize     0x0200  1x 512 bytes
        bInterval               4
Device Qualifier (for other device speed):
  bLength                10
  bDescriptorType         6
  bcdUSB               2.00
  bDeviceClass          255 [unknown]
  bDeviceSubClass       255 [unknown]
  bDeviceProtocol       255 
  bMaxPacketSize0        64
  bNumConfigurations      1
can't get debug descriptor: No such file or directory
Device Status:     0x0001
  Self Powered

Last edit: Zohaib J 2023-11-21

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Tormod Volden - 2023-11-21

Thanks! It is good to have for reference.
This also confirms that this isn't a USB DFU device:

bInterfaceClass 255 [unknown] bInterfaceSubClass 255 [unknown]
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Tormod Volden - 2023-11-21

labels: macOS -->

Description has changed:

Diff:

--- old +++ new @@ -1 +1 @@ -I'veM3 2023 mac in DFU mode and it is not showing up in dfu-util -l but it is showing in mac USB Tree. I guess the new macs (2023 M3) has KIS DFU which dfu-util doesn't support as of now. +I've a M3 2023 mac in DFU mode and it is not showing up in dfu-util -l but it is showing in mac USB Tree. I guess the new macs (2023 M3) has KIS DFU which dfu-util doesn't support as of now.

status: open --> invalid

assigned_to: Tormod Volden --> nobody
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M3 2023 Macs are not showing with dfu-util list command

Multiplatform USB DFU host utility

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#183 M3 2023 Macs are not showing with dfu-util list command

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