Nice improvements
I played this before the STOR was fixed, and I was able to beat it with relatively no problems; the only problem I had was that levels become very difficult to get once you're high enough, and with no ability to heal, I very nearly died and had to start all over. However, Hitler himself was a pushover. I like the addition of the "current morse" box to show the player what he had signalled thus far; if you look at the current morse and find that part of a letter was entered incorrectly, you can just abort by sending a bunch of dots of something. It eliminates the guesswork, especially in cases of Flash/browser lag where the player might not know what signal was entered.
I think my main complaint about the game is that the morse tone is too annoying... when you have to enter hundreds of morse commands, it becomes very grating very quickly. I know this game has music, but after my first playthrough, I have to play the game muted because I just can't stand all the repetitive beeping. Add to this the fact that the same codes are entered over and over (for example, A, 1, A, 1, A, 2, A, 2, A, 2, S, A, 1, etc.) and those repetitive tones get even more repetitive. It would be nice to have the option to mute only the morse tone; the game would still be completely playable, since there is an on-screen indicator when the spacebar is pressed, and the player would still be able to hear the music.
Speaking of music, on my first playthrough I noticed that after I beat the game, the ending music was overlapping another piece of music. This may have been fixed since the first version (I haven't beaten the game again yet, but I'm on my way), but I wanted to mention it just in case.
Lastly, I know you say that the game is short enough to not need checkpoints or saves, but I disagree. Let's just say that the game can be beaten in 45 minutes... if I start playing, then something comes up and I have to leave the game before beating it, I don't want to have to redo the last 30 minutes of gameplay just to get back to where I was. Whether you think it's short or not, saves/checkpoints are always a good idea. What if the game takes 45 minutes to beat, I had played for 44 minutes and Hitler's fire-form was almost dead and BOOM my Flash plugin crashes? I would be right cross, indeed.
Please add in a save feature and the ability to mute morse tones, and this game would be much better. Overall though, not bad, especially considering the handicap of only using one button.