Default Bootloop after edit build.prop

Hi i've edited the build.prop (i've added a string qemu ecc... for the navbar i don't remember) and after reboot i got stuck in a bootloop (i think)
I have access to the recovery (cwm) and got a pc.
Device is rooted with latest paranoid and android 4.4.4
If there is a way for unblock it that not include wipe data or something is better.

(I know certainly is very simple but i'm very noob)

sorry for my english

i've solved bootloop by reflashing rom (i had not backup of any .zip rom so i pushed the latest by "adb push" and then flashed it). I've not lost any data.

sorry for useless post