Backing up Unifying firmware

[RChadwick7]

I've got a number of Logitech unifying dongles. Some are vulnerable, some are not. I want to flash some of the updated dongles with older firmware. Since it seems the older vulnerable firmware is no longer available, is it possible to back up the firmware on a device with older firmware and flash it on a new device?

[zra123]

I've got a number of Logitech unifying dongles. Some are vulnerable, some are not. I want to flash some of the updated dongles with older firmware. Since it seems the older vulnerable firmware is no longer available, is it possible to back up the firmware on a device with older firmware and flash it on a new device?

xxIndirect@80ea828

[nibirrayy]

@zra123 hey I saw that you have a from of this repo and you have updated the scripts to python3. I tried you repo to flash my old unifying receiver and I am getting this error

[2023-03-20 21:07:51.855]  Mark firmware update as completed
Traceback (most recent call last):
  File "/home/nibir/src/nrf-research-firmware/./prog/usb-flasher/logitech-usb-restore.py", line 57, in <module>
    response = dongle.send_command(0x21, 0x09, 0x0200, 0x0000, b"\x20\x00\x00\x01\x02" + b"\x00"*27)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/home/nibir/src/nrf-research-firmware/prog/usb-flasher/unifying.py", line 186, in send_command
    response = self.dongle.read(ep, 32, timeout=timeout)
               ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/usb/core.py", line 1029, in read
    ret = fn(
          ^^^
  File "/usr/local/lib/python3.11/site-packages/usb/backend/libusb1.py", line 864, in intr_read
    return self.__read(self.lib.libusb_interrupt_transfer,
           ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
  File "/usr/local/lib/python3.11/site-packages/usb/backend/libusb1.py", line 954, in __read
    _check(retval)
  File "/usr/local/lib/python3.11/site-packages/usb/backend/libusb1.py", line 602, in _check
    raise USBTimeoutError(_strerror(ret), ret, _libusb_errno[ret])
usb.core.USBTimeoutError: [Errno 110] Operation timed out

any idea what is going on

[zra123]

any idea what is going on

what firmware version do you have? example RQR12.11_B0032
what version of the bootloader? BOT01.02_B0015
if your bootloader has version BOT01.04_B0016, this script will not work, this version needs a signed firmware. use the logitech Firmware Update Tool or fwupdmgr
issue #19

[kaliloua7]

@zra123 could you explain where I should get formatted-backup.bin and infopage.bin referred to in
"Usage: sudo ./logitech-usb-backup.py [firmware-backup.bin] [infopage.bin]"

[zra123]

@kaliloua7 This is reading the firmware from the device, you need to give two names for the files, the firmware will be written to them