Unhappy [Q] perpetuel rebooting

hi! i was using rom toolbox. then i've changed something in the phone theme. they asked me to reboot the device to apply changings. and then they asked me to choose between "reboot" and "fast reboot". i've choosen fast reboot to see how fast the phone would reboot. after that the phone is rebooting again and again continuesly without completing the boot. please some one help me! i am using a kind of chinese dual sim android named sphs on hsdroid.with amr7 processor,216M ram.the internal memory doesn't reach 200M. i was able to root it after long days of research with vroot. i am realy sorry i've not made a nandroid backup. and i am realy sorry too for the bad english. i am in in Burkina Faso,here we do not speak english.and sorry again,i do not have frequent acces to the internet and i would like to find some usefull and helpy answers the next time i'll be connected.someone save me!!!