还是不支持更新，只能全新安装选择保留VMFS，然后重新注册虚拟机。我暂时先不更新了，changelog如下：
November 30, 2020 – v1.2
Note: Upgrade is NOT possible, only fresh installation is supported. If you select “Preserve VMFS” option, you can re-register your existing Virtual Machines.
UI: Disable datastore browsing when no datastores are present
PSCI: Fix missing context_id argument for CPU_ON calls
GICv2: Always enable SGIs, as GIC-500
arm64: Support for big-endian guests
Remove requirements/restrictions on initrd for UEFI-less VMs