Unable to update to Big Sur (Developer Beta) from Catalina.

App & System Services Core OS
animaus OP
Created Aug ’20
Replies 6
Boosts 0
Views 1.3k
Participants 6
Hello,

I have been unable to update to the latest Big Sur developer beta on the new iMac (2020) I just purchased. I installed the developer profile as usual, and went to software update, and I get the latest Safari developer seed, but nothing else. When I install my developer profile and it auto searches for the Big Sur update I get a message that states "Update not found: The requested version of macOS is not available."

I have had no luck getting it to find the update. I've tried re-starting, checking the App Store, trying to unenroll and re-enroll the developer profile, I've tried the public beta profile, but nothing has helped. I was been able to install the beta on my 2019 iMac just fine. Any suggestions?
Replies  6
Boosts  0
Views  1.3k
Participants  6
Romeodawg OP
Aug ’20
Same thing here for a couple days, despite repeated un-enrolling, re-enrolling, and restarting.
2
keith teare OP
Aug ’20
Make sure you have not disabled secure boot - boot into recovery mode and check.
0
animaus OP
Aug ’20
Double checked and Secure boot is at full security
0
chapito OP
Aug ’20
I have the same issue "Update not found" "The requested version of macOS is not available".
0
eaw3c1 OP
Aug ’20
Same here. Tried everything and nothing works. I guess we might need to wait until the 5th BETA. probably not on the list for this system yet. Oh well.
0
Elakya OP
Sep ’20
Same here. Couldn't update from Catalina to Big Sur beta. Always says, "update not found". Any help would be appreciated.
0
Unable to update to Big Sur (Developer Beta) from Catalina.
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