Update my simple android app

My android app does queries on an SQL database using a web service. The query is based on a drop down box. The source code will be provided to you. I need to do the following: 1) Change a couple of static images in the app 2) Change the default drop down box option 3) Currently there is a problem with loading some images in the app. The images are already hosted on the web on my web server. Fix this problem. 4) Improve the speed of the app (if possible) You can find a current version of the app by searching for "hongkonggroupon" in the market. Deliverable: 1) Source code 2) Signed apk that we can just publish to the market