I found the firmware file here How to Flash Intex iBuddy Connect with Flash Tool ? (Tested) / Gsm Helpful | All You Need for Mobile Flashing & GSM but its showing no device found .
Charging light works when i plug in usb it gives blue light.I charged it a little ,after 30min the battery terminals have 3.5v around them , but still its not booting not even android logo.
The above tutorial worked ,idk what was the main issue.I charged the battery for 1.5 hrs more and i think that flashing software said no device found because i didn’t reboot my pc after installing usb drivers.I gave a final try today morning luckily it worked.
Remember: intex ibuddy 3g ,intex ibuddy 3g || ,intex ibuddy connect are different models.