In late 2013 and mid-2014 a significant number of 13-inch MacBook Pro owners are reporting that the MacOS Big Sur update is stopping their machines. a MacRumors Forum threads contain a significant number of users reporting the problem, and similar problems are being reported in Reddit and the Apple Support Community, suggesting the problem is widespread.
Users are reporting that while updating BigmacOS Big Sur, their machines are displaying a black screen. The main reset combinations, including NVRAM, SMC, Safe Mode and Internet Recovery, are all allegedly inaccessible after attempting to install the update, leaving no way to bypass the static black screen.
It appears that an excessive number of users experiencing problems own the 13-inch MacBook Pro between late 2013 and mid-2014, but it is unclear how many users of these models have been affected. Also note that these are the oldest models supported by BigmacOS Big Sur.
A commenter from Reddit said he was asked by Apple’s support to book his MacBook Pro for repair. Another on the Apple Support thread said that the issue has been escalated to Apple’s engineering team, so Apple should now be aware of the problem.
Until it is clear what may be the problem and Apple issues a fix, in late 2013 and mid-2014 the 13-inch MacBook Pro wants to stop installing OSmacOS Big Sur.