I can't write firmware on sbg900

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jhuizar
Junior Member
Posts: 14
Joined: Mon Mar 24, 2008 6:36 am

I can't write firmware

Post by jhuizar »

When I program a whole firmware, the process ends and then the programmer sends a message to power off and on the device

Somebody can help me

thank you
usbbdm
Junior Member
Posts: 8962
Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm »

You need to read back the whole flash.
To me yyyyyyyyyyy means the flash is empty or you have not read the flash yet.
jhuizar
Junior Member
Posts: 14
Joined: Mon Mar 24, 2008 6:36 am

Post by jhuizar »

usbbdm wrote:You need to read back the whole flash.
To me yyyyyyyyyyy means the flash is empty or you have not read the flash yet.
I think I do that

I use the next commands

ldram 9fc00000
program 9fc00000 400000

and the file SGB900 Firm BPI OK+Consola

After program flash and before unplug the device and the usbjtag, I test in image version and change mac and show me the correct info, also allows me change the mac in a dialog box

After that unplug the sbg900 and test it again obtaining the results described in my first post

What can I do


Thank you for your help USBDM
usbbdm
Junior Member
Posts: 8962
Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm »

Did you do cmpram 9fc00000 400000 after the programming? It is very important to make sure the programming is right.
You have reprogrammed the boot area and I am not sure if it is a good idea.
If you have programmed hacked firmware, it might have different memory map and the mac info might not be at the same position.

I found it is important for WRT54G router.
For SB510x modems, it seems not needed.
jhuizar
Junior Member
Posts: 14
Joined: Mon Mar 24, 2008 6:36 am

Post by jhuizar »

Yes I do it

Result compare data is ok

I test again and continues the same problem

ok I try to found an original backup of sbg900 firmwarwe

Maybe this firm is corrupted
usbbdm
Junior Member
Posts: 8962
Joined: Mon Jul 18, 2005 9:33 pm

Post by usbbdm »

If cmpram is OK. then it is the firmware. You got to make sure that the firmware you program is for that modem. Assume some hacked version of firmware will work on your modem is bad assumption.
jhuizar
Junior Member
Posts: 14
Joined: Mon Mar 24, 2008 6:36 am

Post by jhuizar »

When the firmrmware image is in memory (ldram 9fc00000) and after the programming I test

Image 0 version
vxram_sto.bin
Change mac: shows me the dialog box with the correct info

Umplug jtag and exit of programmer software then I test again

Image 0 version
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Configuration not found

The programmer don`t write the firmware maybe because the memory is blocked is that possible
jhuizar
Junior Member
Posts: 14
Joined: Mon Mar 24, 2008 6:36 am

Post by jhuizar »

I solve the problem with a new flash

Tank you USBDM
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