Root Mango Launcher Uninstalled, how to recover it

[gurbhasin]

Hi,

I have rooted my phone and uninstall some systems applications.

And I have uninstall the Mango Launcher, now I am using Xperia Arc Launcher, because Mango Launcher was creating a problem

Now My question is, If I will reset my phone through settings-> privacy-> reset

So, how my phone will start, because system application (Mango Launcher) I have already uninstalled, and Xperia Arc Launcher would also be uninstall when I will reset the phone.

I am wondering, whether I will do reset my phone, then lost all my data as well as warranty.

So, please let me know, how can I reset the phone & do I need to install Mango Launcher or without it I can reset the phone.

Regards
Gurpreet