Hey Im very new to al this SE stuff and right now my very first doubt is: what CID numbers are possible to patch, no FW version!!! CIDS
You can patch any DB2010/12 phone up to CID50. DB2020/CID5/51/52 patching for free is to be released in the near future. It's available through pay services (Kulankendi, Cruiser D-Client etc.) and for owners of software like SE Tool or Cruiser.