cloning software

Dear all, I just acquire an Icom handheld IC-F4262DT and I need help to program it. Firstly the firmware revisions are the following : REV 2.6d - SumD417 DREV 3.2 - DSumF961 Screen displays also : BLD F3E1 (I don't know what does it mean) So my first question is : Is it the last firmware...