Nextel i580 ptt question please.

I am new here and still learning how to move around. If I have posted this wrong I am sorry.

I have 2 Nextel i580's. One has the option in DC/GC under settings , One touch dc, there is an option for, "Quick PTT". One phone has this nice option, one does not. They both have the same version software: R5C.00.02. I can't find anything out about how to get it for the other phone. Nice feature though. I have Group connect option "on". For both phones, but the option in the one phone for this feature does not exist. Does anyone know how I can get it for the other phone? Thank you.

Thanks for your response. I can't seem to find anything on it. Odd... If you push your ptt button and have your flip open, the screen will go to "just" your ptt contacts. You click on the person your looking for and alert or speak. Nice if you just want only your ptt contacts on your screen. Very quick. I think some models have this feature. I did see something about the Nextel BlackBerry having it. Could still be a codeplug mod for "this" phone. I will keep looking. Thanks.

The reason I say google the code plug mod is because the sites I used may be outdated. Just search for i580 codplug mod, There are forums that do it for free or a small fee. They will tell you what mods they can apply to your phone.
I've have all my Iden phones modded except the i880, didnt need it.