Roll back from 11.4 beta

[freddyboyw]

Hi,

I'm trying to roll back my M1 Mac mini from 11.4 beta to an 11.2.3 time machine backup. Recovery only offers me to reinstall the beta, so from research it seems I need to enter a DFU mode and restore while connected to my other computer. Can anyone confirm this definitely is the case?
My issue is my MacBook Air is crashing when connected to the Mac mini so this route seems closed to me for now, unless there is any other method to install the older version of Big Sur.
Not critical I do this but am having some flaky behaviour here and there in 11.4 (which I've reported), that I could do without.

Welcome any thoughts.

Thanks,

F

 

[white7561]

My suggestion. Since you already have a full time machine backup. Just make a 11.2.3 bootable installer. Wipe the internal SSD and clean install the 11.2.3. After that just boot to the internal recovery (which should be 11.2.3) and restore time machine from there. In my logic that should work just fine

Edit : just read that it's an M1 device. Don't wipe it. I repeat. Don't wipe it. Ive heard weird things when you fully wipe your ssd!

 

[Apple_Robert]

The easiest and fastest method of restore is to use the Configurator 2 app. Connect the MBA with (Configurator 2 installed) to the M1 and do a revive or restore. When I do such, it takes 10 - 15 minutes. That should give you the latest public release of MacOS.

Revive or restore a Mac with Apple silicon using Apple Configurator 2

In rare circumstances, Apple computers become unresponsive and the chip’s firmware must be revived or restored.

support.apple.com

 

[freddyboyw]

thanks to you both, I will try again with the configurator from my mba

update: *sigh* the mba continues to crash during the dfu process while downloading the software for the Mac mini. Seems too risky to attempt the full process given the mini is working well under 11.4 beta 1, a few foibles aside. I will trouble shoot the mba separately.

 

[iappnet]

My suggestion. Since you already have a full time machine backup. Just make a 11.2.3 bootable installer. Wipe the internal SSD and clean install the 11.2.3. After that just boot to the internal recovery (which should be 11.2.3) and restore time machine from there. In my logic that should work just fine

Edit : just read that it's an M1 device. Don't wipe it. I repeat. Don't wipe it. Ive heard weird things when you fully wipe your ssd!

Hi
I have same problem with my MBP with TouchBar 2017 I have Big sure 11.4 beta 3
if I wipe my ssd and install the public official Big Sur 11.3.1..my time machine backup will not ask me to upgrade to Big sure 11.4 beta 3..
if yes it will be waste of time to do that...if you understand me..I mean the time machine backup can be downgraded??

thanks