Sometimes there is a request for the source of the old 2.7.0. Yes, there are still many people with very resource-constrained cell phones around, and they are interested in the old 2.7 version which was much smaller than version 3.
You can find the source of 2.7.0 here:
http://www.kugihan.de/dict/download/related_files/versions/2.7.0/DictionaryForMIDs_2.7.0_source.zip (http://www.kugihan.de/dict/download/related_files/versions/2.7.0/DictionaryForMIDs_2.7.0_source.zip)
Gert