I have found the blockchain data in parity. I go to overlayrecent folder and from there to the db folder. It looks like the blocks are the .sst files.
How can I delete the last blocks I downloaded without corrupting the database?
For example when I just deleted the last .sst file, and then went to terminal and ran parity, I got "Client service error:
Client(Database("Invalid argument: You have to open all coloumn families. Column families not opened: col5, col4, col3, col2, col1, col0"))".