I am currently trying to update mbp2018 with t2 to the public beta but it always says can’t do it. I added some images of the error and part of the log. Any ideas? I already booted on recovery and check that I have higher security on the security section. Any ideas? What I can do?
Just had a look around the error codes and found someone with a similar problem on a different software update on macrumours. The advice from Apple to fix it was:
I just received my 6th call from Apple Support and this one did the trick. Finally got the update and no more error.
All Macs with a T2 chip need to shut down, once fully shut down, hold the power button for about 15 seconds (you’ll see the Apple logo appear and then disappear and go back into a shut down state), once that’s finished, turn it back on, log in and do the update. You’re good to go from there.
Can’t say It will work but it shouldn’t do any harm to try?