After the FM1 Workbench V14 I had to enforce the V15 first via FM1 工作台 (see top folder Device Update). Then I was able to upgrade to V16 via M-Upgrade.
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After the FM1 Workbench V14 I had to enforce the V15 first via FM1 工作台 (see top folder Device Update). Then I was able to upgrade to V16 via M-Upgrade.