This is another way on how top fix 6500c auto shut off or often restarted after a few seconds. This can be done by using MXkey, the device driver and flash firmware.
Here's the LOGS screenshots of Successful flashing..
It can be look like this when you do the steps properly below.
Successful flashing completed:
Flashing the device using USB cable via MXkey Procedures:
1.Connect USB ROM
2.NOKIA SERV.TOOL
3.INSTALL PHONE DRIVER IF NEEDED
4.ADD MCU FILE so that the device can be read or detected.
5.Select orClick BUSS CHECK
6.Unplug the cable on the phone then insert the battery. Click the POWER ON
Then do a back-up procedure.....
7:ADD MCU AGAIN
8:Click SERVICE/IMEI and; SECURITY
9:Click IMEI REBUILD
10:Click BACKUP RPL
After RPL Back up, flash the phone again
11:ADD MCU,PMM,CNT
12:Click FLASH
13.Unplug the cable and insert the battery, then Turn the device POWER ON