Boot error vmlinuz-5.4 not found

[cscs]

@Hueich

I stopped an update yesterday and now my laptop won’t boot

Sorry to hear that, but its a bit expected.

If you cant boot in any way from the currently installed system you still may be able to access and fix it using a guide like this:

[HowTo] Resolve an unbootable Manjaro (black screen, login failed, cant boot, etc)

When we have problems gaining access to our systems it is difficult to gather information, let alone fix any problems. Here we will cover common causes and solutions to ‘manjaro wont boot’. TTY If your desktop does not load properly then you might still be able to use most, if not all, functionality by dropping to a non-graphical TTY. By default your system will have multiple TTYs, with each corresponding to an Fx key. Your desktop is assigned to one as well - most often F1. You can chang…

(the long and short of which is in @Wollie’s preceding response )

Feel free to report back once you are able to interact with it and we may be able to help you recover.