Need help flashing rom

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http://forum.xda-developers.com – I have a simpke question, i dont have a computer causr it broke so...im gonna make a backup with titanium backup,not thebpro version....so the backup its located in the emulated sd card , when i wipe the phone to flash the rom, does it wipe the emulated sd card too, so will i lose the backup i made???? Mandado desde una shimba de NEXUS4™ (HowTos)