macOS Big Sur installation timed out (An error occurred installing macOS. The request timed out.)

I'm trying to update to the macOS Big Sur beta (day 1!) but the installation keeps failing with a timeout.

I get a popup that says:
An error occurred installing macOS.
The request timed out.

If I go into /var/log/install.log, there's some detail here, showing that bridgeOS timed out.

What's the fix for this?

Here are the last lines of the install.log file:

Code Block 
2020-06-22 23:46:18-05 Andrews-MacBook-Pro-4 osinstallersetupd[384]: Started downloading package com.apple.pkg.BridgeOSBrain (http://swcdn.apple.com/content/downloads/04/28/001-18400-A_9PR1LXEKFC/czmgv59ffn8j0u96xf2tu7tiu2ykcp3izt/BridgeOSBrain.pkg)
2020-06-22 23:46:18-05 Andrews-MacBook-Pro-4 osinstallersetupd[384]: Retrieved package com.apple.pkg.BridgeOSBrain (http://swcdn.apple.com/content/downloads/04/28/001-18400-A_9PR1LXEKFC/czmgv59ffn8j0u96xf2tu7tiu2ykcp3izt/BridgeOSBrain.pkg)
2020-06-22 23:46:18-05 Andrews-MacBook-Pro-4 osinstallersetupd[384]: Starting bridgeOS update prepare
2020-06-22 23:56:18-05 Andrews-MacBook-Pro-4 osinstallersetupd[384]: bridgeOS update prepare timed out!
2020-06-22 23:56:18-05 Andrews-MacBook-Pro-4 osinstallersetupd[384]: Operation queue failed with error: Error Domain=com.apple.OSInstallerSetup.error Code=601 "An error occurred installing macOS." UserInfo={NSLocalizedDescription=An error occurred installing macOS., NSLocalizedRecoverySuggestion=The request timed out.}
2020-06-22 23:56:18-05 Andrews-MacBook-Pro-4 InstallAssistant[375]: Stopped operation queue with Error Domain=com.apple.OSInstallerSetup.error Code=601 "An error occurred installing macOS." UserInfo={NSLocalizedDescription=An error occurred installing macOS., NSLocalizedRecoverySuggestion=The request timed out.}


Any ideas?
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drewster
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I'm not sure if this will help you out, but I was getting the same problem, checked the log and it was as you reported. I rebooted and it took a little bit of time, but it went okay to install for me finally.
Posted by
octover
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Yeah, reboot helps with this problem. I had the same issue.
Posted by
PushUpek
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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.}


Posted by
rajapunjab
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I'm getting this error "The request timed out" and "bridgeOS update prepare timed out" on macOS Big Sur 11.0.1 (not beta). I tried rebooting and also rebooting into safe mode (by holding down shift) and neither helped.
Posted by
SergeiT
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In some other logs I found entries like 
Code Block 
MacBook-Pro osinstallersetupd[1710]: objc[1710]: Class BOSQueryCurrentStateOperation is implemented in both /System/Library/PrivateFrameworks/BridgeOSInstall.framework/Versions/A/BridgeOSInstall (0x7fff8e697c80) and /Applications/Install macOS Big Sur.app/Contents/Frameworks/OSInstallerSetup.framework/Versions/A/Frameworks/IAESD.framework/Versions/A/Frameworks/IABridgeOSInstall.framework/Versions/A/IABridgeOSInstall (0x107162780). One of the two will be used. Which one is undefined.


I removed the copy from /Applications and that allowed the install to proceed. Eventually the installer got stuck during installation and I had to hard reboot it once and eventually Big Sur update succeeded.
Posted by
SergeiT
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Restart not solved my problem.

Update firmware using DFU solved it:
https://support.apple.com/guide/apple-configurator-2/revive-or-restore-an-intel-based-mac-apdebea5be51/mac
Posted by
bgbraga
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