I reinstalled osmc on my pi1 about 3 days ago…it updated today and then broke. The only addon it had was BBC player, and that wasnt even set up yet.
Like i said…this happened again 2 years ago on my pi2 (Manual update from OSMC, broke my kodi (RC1) - #16 by Sandbird)…after the update, the pi wouldnt boot up…
So 2 different SD cards, 2 different Pi, same OS, same problem.
I am not blaming anyone…the pi1 is a pretty old device…i knew that things might go south with an update…it barely holds it together.
I just wanted to inform that it happened…on a pi1. Just a +1 to the stats table 
You are right about the title… i dont know what i was thinking when i wrote it…it should be : Update broke osmc on a pi1 (fixed)