How to install custom rom without factory reset?

[AC Question]

I hav a galaxy s6 6.0.1 and i want to downloas xposed frame work but i cant i need to install a custom rom i have a twrp recovery can someone can tell me how can i install a custom rom without factory reset?

 

[pkcable]

Welcome to Android Central! You might want to consider joining us http://forums.androidcentral.com/ask-question/409154-join-android-central-community.html

You can then post in our Rooting sub forum for your device (of course you can ALWAYS just view it either way) here.....

Samsung Galaxy S6 Rooting, ROMs, & Hacks - Android Forums at AndroidCentral.com