According to MacRumors, the owners have taken to Reddit, Twitter, and the Apple support forum to report the problem. They explain that during the update to the new macOS version, their MacBooks froze and displayed a black screen. This left them with no way to bypass the screen; with NVRAM, SMC, safe mode and internet recovery are all reportedly inaccessible after attempting to install the update.

— Oscaro Gee (@OscaroGee) November 16, 2020

— Rob Boles (@rob_boles) November 13, 2020 One MacBook Pro user commented on Reddit saying that they were instructed by Apple to send in their device for a repair. Meanwhile, another user in the support forum said that the issue has been brought up to Apple’s engineering team, indicating that the company should now be aware of it. At the time of writing, Apple has yet to address the issue or to provide a possible solution for the 13-inch MacBook Pro owners. It is also uncertain if the cause resulted from the machines themselves or the macOS Big Sur updater. (Source: MacRumors)