actually, the original script downloaded
http://ecdsa.org/electrum/e4a (which was a full path, e4a was the filename) and saved it as e4a-0.52.zip
I did this because something (my mobile network operator?) prevented me from downloading a file with .zip extension from a telephone
Ah, I mistakenly assumed that the urlretrieve function was just performing a concatenation. This makes more sense.
URL updated and scripts added. I can't confirm it to work on my own phone because SL4A freezes when I try to run the script (even on the old location). So please let me know if you have more luck.
Still not working for me.