In my case project is 4.1.3, can I make the whole built procedure with cmd v3? (in other words: Can I deprecate sdk tools? Both sdk-tool and cmd v3 is not working on the same os x imac).
If you are using an older version of Ext JS, you may use Sencha Cmd's build command to build via your JSB file. In other words, Sencha Cmd can replace JSBuilder to produce a compressed build of the files described in a JSB file. Sencha Cmd will not update your JSB file as was done by the previous SDK Tools v2. If your build process requires this support, then you should wait to upgrade to Sencha Cmd.