| CPC G06F 8/65 (2013.01) [B60W 50/08 (2013.01)] | 11 Claims |

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9. A notification system for notifying an approval request to a user regarding update of software to an electronic control unit installed in a vehicle, the notification system comprising:
the vehicle;
an information processing device; and
a server that transmits the approval request to each of the vehicle and the information processing device, wherein:
one of the vehicle and the information processing device is configured to, when a predetermined operation for the approval request is received, transmit an operation result of the predetermined operation to the other of the vehicle and the information processing device without going through the server; and
the other of the vehicle and the information processing device is configured to, when the operation result from the one of the vehicle and the information processing device is received, perform control for withdrawing the approval request received by the other of the vehicle and the information processing device.
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