Why has my wallet's firmware update always failed?

Some firmware updates may require a Card Reset. Please prepare your recovery seeds just in case.

All firmware update requires both a stable power source and Bluetooth connection. Before performing an update, we recommend you insert CoolWallet into its charger and remove any obstacles between the card and your smartphone. 

If the problem still persists, please attach a screenshot of the error message or a video recording of your operation, and contact [email protected]

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