Default [Q] (s6102) install OTA for Dream Fusion V1 rom

So I installed a custom rom (Dream Fuson V1) for the first time in galaxy y duos s6102 yesterday. Everything was going fine until I mistakenly installed the OTA update zip file using cwm, while I was supposed to install it using the stock recovery. So, the new features I was supposed to get after installing the update isn't there. Now my question is, can I simply install the update using stock recovery or should I first clear cache and dalvik?

Thanks in advance.