Well I tried to install the three files via BBsak and via Desktop Manager and neither was willing to install over 419 so i guess it cant be done unless it is on the official one.
Ok if you bbsak the mptt.cod on to your phone, you can go to application center and download ptt. How ever, the only difference between the 591 leak and the 591 official was rhe radio. The os you have might not run ptt with its radio.. And unfortunately there is know way to swap radios after os is on the phone.
I understand and thank you for your help I wanted to try it because it is free but i am not giving up 419 for 591 and all the messes it has created to get PTT, my son tried to install 591 twice the official and it has hosed his tour twice, he is now going back to 419 as well. I am glad that i never was that anxious for it, I am not sure that the MPTT will load via anything unless the 591 is there.