Micromax AQ4501 Dead

I have micromax AQ4501 , its completely dead. I have tried flashing it will all the firmwares available on internet for this device but its not working.
Basically I am facing two problems while flashing.
1. When I try "Firmware Upgrade" it gives me this error

Code:

---

proinfo: Failed to get PMT info

---

2. When I try Download Only or Format All + Download (DA DL with Checksum is checked), it gives me error

Code:

---

BROM ERROR: S_CHKSUM_ERROR (0x411)

---

3. When I try Download Only or Format All + Download (DA DL with Checksum unchecked), then it gets finished completely. But phone does not gets turned on.

Can someone help me out with this.