There is no need for you to buy a new device. What kind of error do you get when you try to connect your device? Does anything happen at all?
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When I try to run the "Genuine check" - I unlock the Ledger, but nothing happens. The Ledger Live asks if I have a hard time connecting, and there is a button for "Repair". When I try to follow the "Repair your Ledger device" procedure. It all stops when I try to load the bootloader. The Ledger displays "Bootloader" in the display, but then nothing more happens.