@joebonrichie ok.

@joebonrichie thanks for the promptly reply.

@ReillyBrogan got it. Many thanks guys. Will do that o/

@ReillyBrogan I've just liste the content of my EFI partition:

@kyrios123 @serebit where can I find the old kernel files? I was looking at /boot but it is empty (?). Removing some kernel files would be an option? Or, there is another way to free EFI space?

@kyrios123 many thanks. I`ll try another installation.

@kyrios123 the output shows that I have the last kernel (current) installed. I was doing my research on how to change the default kernel but seems like I don´t have enough space in my EFI partition.

@ReillyBrogan sorry being noob on this issue. I always keep my Solus updated in Software Center.
How can I proceed in order to update my kernel? Looks like it is already installed. So I don't know why I am still with the older version by default.