> For the complete documentation index, see [llms.txt](https://key.hideez.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://key.hideez.com/troubleshooting.md).

# Troubleshooting

- [Removal of bonds (information about previous connections) in the engineering menu](https://key.hideez.com/troubleshooting/removal-of-bonds-information-about-previous-connections-in-the-engineering-menu.md): How to remove bonds in the engineering menu
- [Updating the firmware from bootloader mode](https://key.hideez.com/troubleshooting/updating-the-firmware-from-bootloader-mode.md): How to update Hideez Key's firmware from bootloader mode
- [How to change the battery?](https://key.hideez.com/troubleshooting/how-to-change-the-battery-untitled.md): How to change the key's battery
- [How to take logs from Hideez Safe application (only for Windows)](https://key.hideez.com/troubleshooting/how-to-take-logs-from-hideez-safe-application-only-for-windows.md): How to export logs for troubleshooting
- [Bluetooth error](https://key.hideez.com/troubleshooting/bluetooth-error.md): How to seal with Bluetoth error upon connect