Ok, did few more tries and when checking error - its all about BridgeOS udpate issue. Not sure why this is an error, Aug 13 22:14:14 RB-MBP16 osinstallersetupd[964]: Retrieved package com.apple.pkg.BridgeOSBrain (http://swcdn.apple.com/content/downloads/62/13/001-35032-A_8R6TI52SJO/czn472a52g0bioec0sjrkh6mbrnnqhwuro/BridgeOSBrain.pkg) Aug 13 22:14:14 RB-MBP16 osinstallersetupd[964]: Starting bridgeOS update prepare Aug 13 22:14:49 RB-MBP16 osinstallersetupd[964]: bridgeOS prepare summary: 17P6610 -> 18P50347c, update = 18.16.10347.5.3, brain = 18.16.10347.5.3, variant = com.apple.bridgeOSCustomer, macOS = 19G2021 (customer), project = BridgeOSInstall-77, userAuth = 0, prod fused = 1, model = j152fap, client = InstallAssistant, retries = 2, session = 742B6F88-546A-46E0-B693-DB9A51574094: Error Domain=BOSErrorDomain Code=204 "An error occurred during preflight." UserInfo={NSLocalizedDescription=An error occurred during preflight., UpdateBundleIdentifier=com.apple.bridgeOSCustomer, NSUnderlyingError=0x7fbdb3d8d750 {Error Domain=BridgeOSSoftwareUpdateError Code=19 "MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);" UserInfo={SystemPartitionSize=1979666432, MSUErrorCode=37, MSUErrorDescription=FCRT migration failed., NSLocalizedDescription=MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);}}} Aug 13 22:14:49 RB-MBP16 osinstallersetupd[964]: bridgeOS update prepare complete Aug 13 22:14:49 RB-MBP16 osinstallersetupd[964]: bridgeOS update prepare failed: Error Domain=BOSErrorDomain Code=204 "An error occurred during preflight." UserInfo={NSLocalizedDescription=An error occurred during preflight., UpdateBundleIdentifier=com.apple.bridgeOSCustomer, NSUnderlyingError=0x7fbdb3d8d750 {Error Domain=BridgeOSSoftwareUpdateError Code=19 "MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);" UserInfo={SystemPartitionSize=1979666432, MSUErrorCode=37, MSUErrorDescription=FCRT migration failed., NSLocalizedDescription=MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);}}} Aug 13 22:14:49 RB-MBP16 osinstallersetupd[964]: Operation queue failed with error: Error Domain=com.apple.OSInstallerSetup.error Code=602 "An error occurred installing macOS." UserInfo={NSLocalizedRecoverySuggestion=You can try again to complete the installation., NSLocalizedDescription=An error occurred installing macOS., NSUnderlyingError=0x7fbdb3de4450 {Error Domain=BOSErrorDomain Code=204 "An error occurred during preflight." UserInfo={NSLocalizedDescription=An error occurred during preflight., UpdateBundleIdentifier=com.apple.bridgeOSCustomer, NSUnderlyingError=0x7fbdb3d8d750 {Error Domain=BridgeOSSoftwareUpdateError Code=19 "MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);" UserInfo={SystemPartitionSize=1979666432, MSUErrorCode=37, MSUErrorDescription=FCRT migration failed., NSLocalizedDescription=MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);}}}}} Aug 13 22:14:49 RB-MBP16 InstallAssistant[962]: Stopped operation queue with Error Domain=com.apple.OSInstallerSetup.error Code=602 "An error occurred installing macOS." UserInfo={NSUnderlyingError=0x7fb4b1485680 {Error Domain=BOSErrorDomain Code=204 "An error occurred during preflight." UserInfo={NSUnderlyingError=0x7fb4b14dce00 {Error Domain=BridgeOSSoftwareUpdateError Code=19 "MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);" UserInfo={SystemPartitionSize=1979666432, MSUErrorCode=37, MSUErrorDescription=FCRT migration failed., NSLocalizedDescription=MSU - 37 (FCRT migration failed.);NSPOSIXErrorDomain - 2 (failed to statfs /private/var/hardware);}}, NSLocalizedDescription=An error occurred during preflight., UpdateBundleIdentifier=com.apple.bridgeOSCustomer}}, NSLocalizedRecoverySuggestion=You can try again to complete the installation., NSLocalizedDescription=An error occurred installing macOS.}

Same here did SMS reset - no luck now deleted installer - re downloading - need to check if it can installer shows version 11. Still awaiting answers.. Macbook Pro 16" 2019