Deleted the file from the starting (very first) mission. Now I can't finish it
Have you tried getting onto the first puzzle server (176.248.62.65)? It also contains a copy of heartbleed.
Make sure to delete your logs.
UPDATE: When you are logged in an NPC server, you can see the hardware reset timer and the software reset timer. Try to log in/refresh the server software list when the software reset just happened. If it doesn't work, you'll have to wait for the hardware reset.
