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barrykn / big-sur-micropatcher

A primitive USB patcher for installing macOS Big Sur on unsupported Macs
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How can i downgrade To Catalina?? Mac mini 2011 #173

Closed jazoee closed 3 years ago

jazoee commented 3 years ago

i want to go back from big sur to catalina. The problem is that after the clean install of Catalina I can't start any programs. in addition, i cannot make any changes via the terminal. I only see that I can use the recovery function to make changes, as this is a costum setting. it doesn't work via recovery either, everything is blocked. does anyone have an idea how I can remove the patches and kexts so that everything works as before. all programs crash´s like this Bildschirmfoto 2021-01-23 um 20 16 09

Ausdauersportler commented 3 years ago

This is no patcher issue. Wipe your disc and reinstall Catalina. There has never been a downgrade path on Apple system. Thanks in advance

jazoee commented 3 years ago

i don't think you understand the problem. I have already reinstalled Catalina 5 times and tried to install Mojave myself, but always with the same problem. I mean the downgrade in general terms! I just want to undo this patch and simply erase the hard drive and reinstall it is unfortunately not the solution.

Ausdauersportler commented 3 years ago

Please, I did more than 100 Big Sur installations on unsupported Macs and deleted them, reinstalled former macOS versions and so on. I also have in parallel all macOS versions from Sierra to Big Sur latest installed on one SSD and can happily boot each of them without any problems (mostly in iMac Late 2009, Mid 2010, Mid 2011 systems).

I can guarantee that the patcher itself does not leave any hidden files on the disk if you choose to reformat on (macOS Catalina etc.) installation using another (USB) installer.

If you experience problems with the new installation than this would be an issue of your new installation! Having trouble with Catalina on a Mac mini 2011 is not a micropatcher issue.

I think you do not understand to create Catalina installation on your Mac mini!

jazoee commented 3 years ago

i don't want to question your competence here either. i just need a solution. the problem only appeared after the patcher. before that everything was going very well with Catalina. never had a program crash before. Currently there is no program except for the Apple apps. I have installed various unsupported macs and I haven't had these problems with any of them. do you have a solution for me that I can at least start the apps? or how do you think I should design the reinstallation so that I no longer have any problems?

Ausdauersportler commented 3 years ago

The problems in communication oft starts using phrases like "you do not understand"...

Back to the non micropatcher issue. You can have information stored in the NVRAM (PRAM reset), you can have a demotivated SMC (SMC reset) and you may just played around with OTA upgrades and got an unwanted firmware upgrade. Now we have all the places where information can be stored/left after your short journey with Big Sur.

With your ongoing Catalina issues I would start posting on this thread.

jazoee commented 3 years ago

first of all sorry for that. that wasn't meant badly. I just can't understand why it's not working I tried smc and pram days ago, but without success. what do you mean by OTA? I need extra hardware for that, don't I? The biggest problem I have is that no matter how often I reinstall Catalina, the settings in the terminal (SIP settings) simply cannot be reset. even manual changeover via recovery os has no effect. do you know a possibility to reset these systems to factory settings? thanks in advance

Ausdauersportler commented 3 years ago

OTA are the over the air updates like all the iDevices get from Apple for a longer time. If you did not tried to upgrade your primary installation with an Apple update your will unlikely have passed a firmware update attempt.

Have you checked the EFI partitions of your internal drive? If there is more than a single folder named Apple and you have no Windows installed delete it.

Starting with a PRAM reset and rebooting into an High Sierra USB installer should allow your to disable SIP. I have always a small High Sierra installation left in my unsupported Macs (or more general an installation of the last supported macOS on this particilar system) in a separate partition to have a fall back.

Again, I guess you should first check the Mac mini with the latest supported and then move on, again.