my cloud 트랜스미션 설치 문의 드립니다.

안녕하세요. 
뽐X에서 트랜스미션 설치하기 보고 따라하다가 안되는 부분이 있어서 이렇게 글 남깁니다. 
아래 처럼 나오는데 무슨 문제일까요? 
소스 리스트 수정 안하고 하고 상관없이 아래와 같이 안되고 있습니다. ㅜㅜ 
my cloud 2T 사용하고요. 

WDMyCloud:~# apt-get install transmission-cli transmission-common transmission-daemon 
Reading package lists... Done 
Building dependency tree 
Reading state information... Done 
Some packages could not be installed. This may mean that you have 
requested an impossible situation or if you are using the unstable 
distribution that some required packages have not yet been created 
or been moved out of Incoming. 
The following information may help to resolve the situation: 

The following packages have unmet dependencies: 
 transmission-cli : Depends: libcurl4 (>= 7.18.0) but it is not going to be installed 
 transmission-daemon : Depends: libcurl4 (>= 7.18.0) but it is not going to be installed 
E: Unable to correct problems, you have held broken packages.