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Unable to Update mac os big sur on Dell Latitude E6530


Go to solution Solved by Hervé,

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Updates are not offered when running macOS with the -no_compat_check boot arg. There are 2 x pre-requisites for obtaining Big Sur update offers:

  1. the SMBIOS of a Mac model compatible/supported by Big Sur (MBP11,x minimum).
  2. a SIP value that does not enable Apple Internal; it's disabled by default and must be kept disabled (bit #5 of SIP value, see here for details).
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