a totally dead Dopod 838pro ?

[tangwd898]

Dear all,

I just got a Dopod 838pro, it seems totally dead as i can't turn it on, i can't make it enter the bootload mode. the only thing i can see is the LED is in red when i charge it.

does any one know what's the problem and how to fix the problem?

many thanks.

[ultramag69]

Try another battery if you know someone that has the same device. It could be bung.
Cheers...:D

[tangwd898]

Try another battery if you know someone that has the same device. It could be bung.
Cheers...:D

yes i have put a imate JASJAM battery in it but the problem is still the same.

cheers.

[tangwd898]

seems no solution?

[scholbert]

Hi tangwd898,

i got no simple solution but some advice.

First i have to quote myself form another thread :rolleyes::

This is very similar to what happened to my device. After downgrading from olipro's hard-spl something went wrong. After flashing succeeded with 100% the device got restarted and there it was... nothing!!

What i found out in the meantime is that the IPL was not flashed correctly.
While trying to reflash the device with JTAG debugger, i examined that the NAND write protect signal sticks to GND right after reset.
Maybe this also a hardware issue. I'll find out soon
The bricked IPL-bootloader could also be the cause.

At least if the red light turns on, the DC-DC converter on the hermes is doing well. This means the unit is partially working but not booting.


Check if your device is still recognized by a host PC.
If you are not able to enter bootloader and there's no green light at all when you power up the device, i would suggest to check your mainboard.

First do some measurements...
Follow this thread:
http://forum.xda-developers.com/showthread.php?t=316531

You may also try the JTAG method to examine your bootloader code or reflash NAND chip:
http://forum.xda-developers.com/showthread.php?t=391047

In any case you'll need some electric skills and follow the manual to disassemble the device!

Good luck,

scholbert

[tangwd898]

Hi tangwd898,

i got no simple solution but some advice.

First i have to quote myself form another thread :rolleyes::



Check if your device is still recognized by a host PC.
If you are not able to enter bootloader and there's no green light at all when you power up the device, i would suggest to check your mainboard.

First do some measurements...
Follow this thread:
http://forum.xda-developers.com/showthread.php?t=316531

You may also try the JTAG method to examine your bootloader code or reflash NAND chip:
http://forum.xda-developers.com/showthread.php?t=391047

In any case you'll need some electric skills and follow the manual to disassemble the device!

Good luck,

scholbert


hi scholbert,

thank you very much for the information.

my unit seems NOT totally deal as i found it can be entered into the bootloader for about two second last night for a few times and dead again, but i can't make it enter the bootloader again now. very weird.

The unit can't stay for a long time when it entered the bootloader and will dead when i releaseed the key.

can anyone know how to do next?

many thanks.