[id-android] WTA : ganti ROM ahatouch

RR, sorry nih nanya mulu.. Maklum baru pertama pegang robot..
Nah, ahatouch saya udah di root, dan pake rom sephia v.3, kalo skarang saya mau ganti rom gmn caranya ya? Apa dengan masuk recovery mode trus pilih install zip saja?
And, data" bakal ilang ga ya? Kaya contact, applikasi? Btw, aplikasi saya udah di install di sdcard smua..
TIA
Sent from my BlackBerry® smartphone from Sinyal Bagus XL, Nyambung Teruuusss...!

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