The ""Uploading the firmware and BIOS"" section of the context information states that the firmware and BIOS can be updated. The ""Required tools"" section states that the tools required to update the firmware and BIOS are listed. Therefore, the button used to update the cash device firmware is the button listed in the ""Required tools"" section."

Based on the information provided here, which button is used to update the cash device firmware? You should write your response with 250 or more words.
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