Helpblack berry smart tool
 

can someone explain how to doslow method whith blackberry smart tool lates version?

Firstly which phone do you want to work with? Just to know if it's possible, new generation can't be managed by slow method.

As for slow method you have to check the firmware inside the phone and get a SFI file that will be from same model and same version of firmware and application data, the soft will ask for it