System Manager GUIを使用したONTAPのアップグレードがシグネチャエラーで失敗する

• ONTAPイメージをリポジトリにダウンロードしたあと、System Managerを使用してアップグレードを開始
• アップグレードが 検証フェーズで停止し、次のエラーが発生します。

Cluster::> cluster image show-update-progress
                       Estimated     Elapsed
Update Phase     Status          Duration     Duration
-------------------- ----------------- --------------- ---------------
Pre-update checks   completed         00:10:00     00:01:06
ONTAP updates     in-progress        01:32:00     00:05:50

Details:
Node name       Status       Status Description
-------------------- ----------------- --------------------------------------
Node_01       failed      Error: Failed to verify the 
                    signatures of the image.The image
                    might have been corrupted. Replace
                    the image, and then try the command
                    again.
                    Action: Use the "cluster show"
                    command to verify that all nodes in
                     the cluster are healthy. Use the
                    "cluster image package
                    show-repository" command to verify
                     that the downloaded image has the
                    correct version. If all nodes are
                     healthy and the image has the correct
                     version, wait a few minutes, and then
                     use the "cluster image resume-update"
                    command to resume the update.

• を実行して問題を解決できませんでした