Big Sur 11.5

I tried to update to Mac Os Big Sur 11.5. But, every time I try, I receive this message, "An error occurred while downloading the selected updates. Please check your internet connection and try again". What might be the possible reason?

MacBook Air 13″, macOS 11.4

Posted on Jul 25, 2021 5:42 AM

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Question marked as Top-ranking reply

Posted on Jul 25, 2021 7:31 AM

If this update is for Big Sur 11.5 - the error message can be misleading. There are factors like poor Wifi connection, slow wifi connection, too many other people downloading at the same time and Apple Severs are overloaded, Software on the computer interfering with the download process, running behind a VPN and or / if via wifi too many Other devices using the wifi at the same time reducing the Bandwidth to you computer.


Best Results are via Ethernet Cable to Router


If via Wifi - Disconnect all other Devices using the Wifi - want the Maximum Bandwidth only for this computer


There are several ways to download the Big Sur 11.5 update. 


1 - Connect to Router via Ethernet connection and restart the computer in Safe Mode and then open the Apple Apps Store and get the Full Installer of Big Sur. It will be the 11.5 version and once downloaded run the installer from the Applications folder.


2 - Resart the computer in Recovery Mode ( INTEL Command + r ) and choose Reinstall macOS. It too will download the full Installer and commence the installation. For M1 CPU the Recovery Mode is Here


Are there any AntiVirus, Disk Cleaner, Optimizers, Defrag, VPNs etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation.


Any of the above will interfere with the download and installation process

2 replies
Question marked as Top-ranking reply

Jul 25, 2021 7:31 AM in response to Engr-Ubaid

If this update is for Big Sur 11.5 - the error message can be misleading. There are factors like poor Wifi connection, slow wifi connection, too many other people downloading at the same time and Apple Severs are overloaded, Software on the computer interfering with the download process, running behind a VPN and or / if via wifi too many Other devices using the wifi at the same time reducing the Bandwidth to you computer.


Best Results are via Ethernet Cable to Router


If via Wifi - Disconnect all other Devices using the Wifi - want the Maximum Bandwidth only for this computer


There are several ways to download the Big Sur 11.5 update. 


1 - Connect to Router via Ethernet connection and restart the computer in Safe Mode and then open the Apple Apps Store and get the Full Installer of Big Sur. It will be the 11.5 version and once downloaded run the installer from the Applications folder.


2 - Resart the computer in Recovery Mode ( INTEL Command + r ) and choose Reinstall macOS. It too will download the full Installer and commence the installation. For M1 CPU the Recovery Mode is Here


Are there any AntiVirus, Disk Cleaner, Optimizers, Defrag, VPNs etc installed which should be removed as per Developers Instructions. They are useless, unneeded, cause havoc and interfere with the normal operation of the OS and may even Corrupt the OS requiring a Reinstallation.


Any of the above will interfere with the download and installation process

Jul 25, 2021 7:24 AM in response to Engr-Ubaid

Engr-Ubaid wrote:

I tried to update to Mac Os Big Sur 11.5. But, every time I try, I receive this message, "An error occurred while downloading the selected updates. Please check your internet connection and try again". What might be the possible reason?


?


A suspect download speed?


You can try a faster Network

You can try getting closer to the router if wireless

You can try an Ethernet hardwire connection

You can verify your computer time is set— Date&Time and Time Zone are correct within 5 minutes of apple servers

sudo sntp -sS time.apple.com



Power Cycle your router

Disable any VPN or Proxy server

Uninstall any third party Cleaners,Optimizers,Anti-virus

Do a safe boot   https://support.apple.com/en-us/HT201262



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