Seek advice on NO BOOTLOAD Screen

[chris_khho]

My MDA was unable to get back to bootload after a unsuccessful ROM upgrading. Is it possible to replace the ROM (hardware) so that I can save my MDA?

I tried the Power on key and softreset to reset it but only return to a messive screen.

Pls help. Thanks

[ntabikha]

cris...
you dont need to replace the hardware rom!!
try runing the upgrade program again, it sometimes picks up where it left off. if that dont work, try the SD card method.

i'd go into more details, but all that info is here in these forums already.
if u still need help though, contact me, and i'll try to help you.

good luck

[chris_khho]

Dear Ntabikha,

Thanks v much!

However, I tried the upgrade program many times and the decktop just said the computer cannot recognise the device.

So, I think method 1 is not possible.

For method two, I will try to put the nk.nbf file into my SD card and put it in the device and see whether the MDA can pick up the ROM. Will let you know whether it is successful.

BTW, when the screen is on, it only appears some fuzzy horizontal lines and two small empty boxes, have you seen this before?

Chris

[ntabikha]

yes, i had the same fuzzy lines. i fixed That problem via the SD card method.
just remember that, you have to write the nbf file to SD card, not just copy it to SD card ;)

dont laugh, i did that mistake at first :P

good luck

[chris_khho]

How can I "write" it to the card?

I thought I only copy the file to the card through a SD reader.

Well, I know now, use rom kitchen to cook the rom and use osimagetool to copy the nb1 file into a sd card.

All i need to do next is to insert into the MDA and press power button together with softreset key for several times until successful....

[chris_khho]

Dear ntabikha,

I am still unable to obtain the bootloading screen of my MDA after inserting the SD with nb1 file written by xdatool. I tried many times power button and soft reset simultaneously (more than 20times) and the screen are still full of messy lines and 2 big empty boxes.

Can you help please? What is the fix broken bootloader in the xdatool?

I really did search around the forum but still can't be able to get back the bootloader screen. Pls help.

Chris

[cgigate]

yes, i had the same fuzzy lines. i fixed That problem via the SD card method.
just remember that, you have to write the nbf file to SD card, not just copy it to SD card ;)

dont laugh, i did that mistake at first :P

good luck
I'm wondering if you could not see bootloading screen , how could you use SD card to restore OS and bootloader ?

[chris_khho]

No, there is no bootloading screen at all.

I took the MDA out to a repair shop and they said that is a hardware failure. And they don't have the stock to replace it.

But I don't believe that cause I was just downloading the OS. It shouldn't hurt the hardware that much.....

[cgigate]

BTW, when the screen is on, it only appears some fuzzy horizontal lines and two small empty boxes, have you seen this before?

Chris
I fixed couple such phones "horizontal lines and two small empty boxes" due to failure upgrading (all flash ROM messed up).
You have to use hardware flash ROM writer to wire the flash ROM pin to write bootloader and CE directly to chip.
I can help you to fix the problem (I'm in Canada, my email is cgigate@unifiedcomm.com)

[Ivan]

Hi, I have similar trouble. My boss upgrade his MDA TMO (Austria) to official TMO version of OS and now it coming only to splash screen. MDA doesn't sync through cradle, doesn't seems to be charged, and I cannot enter BOOT mode for flashing ROM from SD card.
Is there any chance to fix it by myself?
Thanx, Ivan
TO CGIGATE: If you have any solution, can you post it here? Or it is so dangerous for nonexpert people? :wink:

[cgigate]

Hi, I have similar trouble. My boss upgrade his MDA TMO (Austria) to official TMO version of OS and now it coming only to splash screen. MDA doesn't sync through cradle, doesn't seems to be charged, and I cannot enter BOOT mode for flashing ROM from SD card.
Is there any chance to fix it by myself?
Thanx, Ivan
TO CGIGATE: If you have any solution, can you post it here? Or it is so dangerous for nonexpert people? :wink:
If you don't have a working OS and a working bootloader, the only solution is hardware solution. You have to wire the flash chip directly to the flash ROM writer ...
yes, it is dangerous for nonexpert people

[Ivan]

Thank you CGIGATE for quick answer. Anyway I wrote you an email, could you be so kind and send me informations how I can do that, or where I can find these steps?[/quote]