Cant' update to Big Sur - update not found the requested version of macos is not available

YAAAAAAAAY

ohh, okay thank you

Big Sur installed on my machine last night without any issues. I have a Late 2013 MacBook Pro, 13".

Just ells me update version not found

for those of you who cant seem to update Big Sur; if it's not been posted already take a look

https://arstechnica.com/gadgets/2020/12/some-big-sur-users-are-unable-to-update-macos-due-to-an-mdm-bug/

same here, my macbook pro 2018 touch bar custom spec..

I have the same issue on MacBook Air with Catalina os and MID 2012. freeing of mine has updated with MacBook Air

So... Apple 'censored' my above post because I said 'd*a*m*n' in it!!! :-)

Interesting. I just did an Erase of Catalina 10.15.7 with all supplemental updates and clean install via a USB Installer of Big Sur build 11.0.1 ( 20D50 ) on a 2018 Retina MBA with T2 chip and all went just fine.

Food for thought visa vie my installation. When booting from USB installer of Big Sur, it prompted be to perform some type of update before attempting to install. Then, once done it allowed me to install Big Sur. Once all done, I verified what it could be. It was a Boot ROM and iBridge update required before installing the actual OS.

I am guessing, the MBP Pro 2013 - 14 Boot ROM could be the issue they are working on?? Thus, not getting the Big Sur no matter what method is used ( for now ).

MBP Late 2013, 256gb. I was able to download and install BS (a curious choice of name) a few days after its release, through the usual System Prefs update. To do so I had to remove my Win 10 partition to make room for it. Once installed it worked but it was very noticeably slower than before. I now had sufficient space, over 80gb, to reinstall my Win 10 partition. That turned out not be possible . I even tried Parallels but that couldn't do it either. I decided to revert back to Catalina and used my Time Machine to restore it. There were real problems doing so. I kept getting the white circle with the diagonal line and words to the effect that there was no OS that could boot it up. I persisted and after god knows how many tries I got it working again. The option to update has now gone and I'm told my software is up to date, os Catalina 10.15.7! All a bit traumatic to be honest and I won't be doing it again in a hurry. The old adage "if it isn't broken don't try fo fix it" applies.

I think Apple wisely choose to halt the update to older MacBooks, or as has been said, "retire the update for 2013 and 2014 MacBook Pro." I say this because I'm one of the owners of a MacBook Pro 13" Retina Mid 2014 that was bricked by the update. I attempted install the night Big Sur came out, it went through the progress bar with the Apple logo, restarted and came up to a black screen (LED backlight on, nothing else). I spent about three days on the phone with Apple Support and took it in to get it diagnosed, the Logic Board bricked. At the time when I called, I was told mine was the first they heard not being able to get into recovery mode, but since than it looks like many others are effected: https://discussions.apple.com/thread/252034110

It describes the exact same issues mine had after attempting to install Big Sur.

Now the frustrating part is that I have a bricked MacBook Pro that doesn't even have a trade-in value to get a new MacBook to replace the one Big Sur killed. Not pleased and hope Apple begins to offer discounts to those Big Sur took out. Should be easy to tell with the MacBook being logged in, Big Sur downloaded, and the MacBook never logging in again...

I have the late 2013 MBP retina as well and i updated mine when it came out, everything worked fine with the new OS. But i had linux on it as well and i wanted to get rid of it because i dont need it anymore. I had a thumbdrive with Catalina on it and i reinstalled the whole laptop from scratch and after that i cant update to big sur for some reason.