Finish half done features in iPhone application -- 2

We hired a freelancer to do this project and he has completed about 50% of it, we want someone to finish it off. The documentation sent to the developer is attached, this describes the project. Here is what has been completed already from the given documentation: 1 - This is done, but we need you to only implement this for a certain type of object and not all objects as it is done now. 2 - This is done but with an error - Facebook SDK needs to be updated to the latest - 3 - This is 40% done 4 - This is also about 30% done Only bid if you have experience with the Facebook SDK and know what you're doing.