@Draxzelex Only thing in contents folder where cheats. And those cheats don't involve the troublesome games.
Maintenance mode did not help.
@impeeza SD card is not corrupt. I did get the sigpatches from there.
Anyway did some retesting.
1) Directly put SD card into PC.
2) Re-copied the sigpatches
3) Added a test game and update directly to the SD card
4) Insert SD into Switch inject and booted.
5) Tried one troublesome game. Said files corrupted check. Cancel retried game same error.
6) Removed said game.
7) Used tinfoil to install BASE game.
8) Tried base game and it booted fine.
9) Updated the game using tinfoil.
10) Tried booting the game and it gives me an error.
Again here is my switch info:
15.0.0 AMS 1.4.0/S
So it seems there is an issue when some games are updated. Game I retested was Switch Sports.
What could I still try to make it all work? Any ideas?