Sorry for posting it here for the simple reason that I'm new here and hence not able to post anything in the development section. Nice work here! Tested on a TW T8585 LEO512 with DataOnExt and almost everything is working here: smooth transitions, working sound and HDA (not perfect, i.e. defective 720p decoding but useable with lower definition), seemingly working SD mounting (test not done yet), smooth Rosie and fast WiFi/3G (if only the latter didn't crash that often).
Nevertheless, problems/bugs are as follows:
1. Bluetooth detectable but no working scan nor successful pairing.
2. Camcorder crashes upon mode changing/simply doesn't work.
3. Long pressing hardware home button doesn't give background management
Back to the title. Please check your update_script and look for the 49* lines with a text editor (I suggest Jota+), delete the doubled parentheses, repack, flash and enjoy!