Trend Micro tool is good for Cerber v1 and v2 decryption, but in case of v3 ransomware you can only pray that ShadowExplorer or Recuva will find shadow copies of your important data. Found out here (http://manual-removal.com/cerber3/) that despite of changing the encryption method, the new ransomware chiefly relies on the same propagation schemes. It also does not change its skins and ransomware notification and payment methods. So I think that V3 decryptor will be released soon.
So I'd recommend you to save encrypted data and wait... or pay
