I am getting the same problem, Stopped operation queue with Error Domain=com.apple.OSInstallerSetup.error Code=502 I have done: SMC Clear at restart. NVRAM reset Safe Mode. Nothing helped him to resolve this issue. I have been trying from macOS Big Sur 02 beta to macOS Big Sur 11 beta. No luck in installation. Installation Log: Oct 21 09:28:21 C02XP2XHJG5K osinstallersetupd[12063]: Added auxInfo from BuildManifest.plist: { macOSProductBuildVersion = 20A5395g; macOSProductVersion = "11.0"; macOSVariant = Customer; } Oct 21 09:28:21 C02XP2XHJG5K osinstallersetupd[12063]: Using product <OSISMSUBundleProduct: 0x7faf7144ff90> at distance 10 Oct 21 09:28:21 C02XP2XHJG5K osinstallersetupd[12063]: Skipping preflighting since we're not on supported hardware Oct 21 09:28:21 C02XP2XHJG5K osinstallersetupd[12063]: Starting personalization Oct 21 09:32:12 C02XP2XHJG5K osinstallersetupd[12063]: Personalization summary: 19H2 -> 20A5395g (Customer), global = 0, variant = multiple, client = osinstallersetupd, user auth = 0, tdm = 0, prod fused = 1, model = j680ap, bridge = 17.16.16610.0.0,0, session = 9B74D149-AD39-454F-95A1-AF17B80D2CC2: Error Domain=OSPErrorDomain Code=201 "An error occurred during personalization." UserInfo={NSLocalizedDescription=An error occurred during personalization., NSUnderlyingError=0x7faf1288d960 {Error Domain=AuthInstallErrorDomain Code=11 "(null)"}} Oct 21 09:32:12 C02XP2XHJG5K osinstallersetupd[12063]: Personalization failed: Error Domain=OSPErrorDomain Code=201 "An error occurred during personalization." UserInfo={NSLocalizedDescription=An error occurred during personalization., NSUnderlyingError=0x7faf1288d960 {Error Domain=AuthInstallErrorDomain Code=11 "(null)"}} Oct 21 09:32:12 C02XP2XHJG5K osinstallersetupd[12063]: Operation queue failed with error: Error Domain=com.apple.OSInstallerSetup.error Code=502 "An Internet connection is required to install macOS." UserInfo={NSLocalizedDescription=An Internet connection is required to install macOS., NSLocalizedRecoverySuggestion=Connect to the Internet and try again.} Oct 21 09:32:12 C02XP2XHJG5K InstallAssistant[12062]: Stopped operation queue with Error Domain=com.apple.OSInstallerSetup.error Code=502 "An Internet connection is required to install macOS." UserInfo={NSLocalizedDescription=An Internet connection is required to install macOS., NSLocalizedRecoverySuggestion=Connect to the Internet and try again.}