Cannot update from Big Sur 11.1 to 11.2

I solved the issue by creating a bootable usb of 11.2.1, booted into recovery, and installed the OS of the USB. I didn’t erase the disks. After install, all accounts and software were still there. Verified it was on 11.2.1.

Hi,

Does you have another users ?

in my case, i open the box with an user... An another user use the MacBook.

When update is available... the last user can't made the update.

So, the first user... can !

Maybe it's the answer for you ?

I hope it's usefull ! ?

Hey there, gjen54.

Welcome to the Apple Support Communities. Keeping your macOS up-to-date is vital, so we can understand why you’d want to resolve the issue with being able to enter your password to update to 11.2.

We know that you mentioned that your login password works for other functions, but please change your password and try to update again: Change or reset the password of a macOS user account 

We hope this helps! Don’t hesitate to reach back out if you have further questions.

All the best. 

@GLSLB are you still having the problem? Is it a silicon MacBook? I believe it is a problem with secure boot. Try typing this in terminal and see if it fixes the problem

diskutil apfs updatepreboot /

Try checking if caps lock is enabled

I have the exact same problem on my M1 MacBook Pro 13".

I have an admin account and after downloading 11.2 it asks for my password to restart. I enter it correctly, and the dialog box just shakes as if I entered it incorrectly. I do it again, ensuring it is correct. Once again, it won't accept it.

I tried what you suggested by changing the password. Same thing. Other functions where I enter my password work correctly (logging in, creating a new user, updating apps, etc).

I also tried creating another user with admin rights. Same problem.

I've tried resetting the SMC, no luck. I've tried booting in to safe mode, no luck.

How do I fix this?

I’m the same. 13” MacBook Pro M1 running 11.1. The 11.2 upgrade downloads fine. When it asks for a password to reboot and complete the install, the password is not accepted. The same password works to log in and change settings. It only fails for the update.

I changed the account password and created a separate new admin account. Neither worked.

Is there another way to update?

Thank you, @adsimmons. This solved the issue. Tried to first update without updating the preboot and received the same error after typing in the password. Ran the diskutil command above, rebooted, then updated with success!! I moved from 11.2.2 to 11.4

Tried again when updating to 11.2.2 and it's still an issue. The software update still won't accept the password. I used the same approach as before and was able to update.