I have Karbonn A1+, android system of my phone totally hanged. i want format my phone and reinstall operating system. please suggest me method. (Android Operating System : Android 2.3 Gingerbread)
Do you want to void your warranty? If not, contact the Karbonn Customer Care and ask for the Official Flash Tool and a copy of the Stock ROM. Reboot your phone in recovery mode and reinstall the android using that tool.