Please post anything that you need to debrick in here.

FrankAcosta · Post by **FrankAcosta** » Sun Nov 15, 2009 5:28 pm

witch loader or software do i need with Usb ttl max232?
having hard time please need some help thanks in advance.

Billy-idol · Post by **Billy-idol** » Thu Dec 03, 2009 5:24 pm

detect
IDCODE 0334817F
Broadcom BCM3348
IMPCODE 00800908
EJTAG V1, V2.0
DMA supoorted
Unknown flash type!
Report these two value to http://www.usbjtag.com/vbforum 81f8,8e94

cant restore my modem pls some one can help me ? i need a guide to do with usbjtag nt

tks

Post by **usbbdm** » Thu Dec 03, 2009 6:53 pm

Try to use
tap c
tap a ffffffff
If you see DEBUG ON then press detect again.

macanazo · Post by **macanazo** » Wed Dec 09, 2009 4:53 pm

-detect
IDCODE 0334917F
Broadcom BCM3349
IMPCODE 00800904
EJTAG V1, V2.0
DMA supoorted
Found Address= 9fc00000 Intel 28F160C3B
-ldram Boot
-ldram 9fc00000
-erase 9fc00000 200000
Erase starts...
Erase time 00:00:18 (.671)
-sprogram 9fc00000 200000
Program Starts...
Program speed 22.66 KB/s
Program time 00:01:32 (.015)
Program pass, if no further programming needed, power off/on the target
-cmpram 9fc00000 200000
Compare data Failed address 9FC00000,target 02,PC memory 0B

again i did replace the flash and i dont see any bridges so......

Post by **usbbdm** » Wed Dec 09, 2009 6:04 pm

try to use tap c
tap a ffffffff
then erase and sprogram
then reboot and cmpram.

Use "scmpram" if you see DEBUG ON and you want to compair.

dustin21n · Post by **dustin21n** » Tue Jan 05, 2010 1:33 pm

need help with this modem. first question is should i be using sb5100 under usbjtagnt or sb5101? but when the flash was detected im getting idcode fffffff manufacture code 7ff. so i figure the modem is bricked. been trying to use procedure 1 to debrick but no luck. does anyone have the picture of the board and instruction on debricking the modem thru using the voltage connection? any info is appreciated

Post by **usbbdm** » Tue Jan 05, 2010 3:41 pm

dustin21n wrote:need help with this modem. first question is should i be using sb5100 under usbjtagnt or sb5101? but when the flash was detected im getting idcode fffffff manufacture code 7ff. so i figure the modem is bricked. been trying to use procedure 1 to debrick but no luck. does anyone have the picture of the board and instruction on debricking the modem thru using the voltage connection? any info is appreciated

Check JTAG pins. Pin 1 is RED. To me it is not the modem but your JTAG connection problem.

dustin21n · Post by **dustin21n** » Tue Jan 05, 2010 4:49 pm

yes my pin 1 is red with the arrow on the same side. pin 1 is connected to pin 6 on the board...this is what im getting when choosing sb5101mod, sb5100, and sb5101

IDCODE FFFFFFFF
Manufacturer not found 7FF
-detect
IDCODE FFFFFFFF
Manufacturer not found 7FF
-detect
IDCODE FFFFFFFF
Manufacturer not found 7FF
-detect
IDCODE FFFFFFFF
Manufacturer not found 7FF

Post by **usbbdm** » Tue Jan 05, 2010 8:54 pm

Then you have JTAG connection problem. Soldering or whatever. With all FFs nothing can be done.

bytheface101 · Post by **bytheface101** » Thu Jan 21, 2010 12:24 pm

hello all,
my wrt54gv2 was bricked and the flash intel dead.
I just changed the chip for an AMD 29LV800BB complatible.
when i do a detect I see:
Copyright http://www.usbjtag.com 2008,2009,2010
USB JTAG NT 0.34a
-detect
IDCODE 1471217F
Broadcom BCM4712
IMPCODE 00800904
EJTAG V1, V2.0
DMA supoorted
Found Address= 9c000000 Compatible flash AMD AM29LV800BB
Found Address= 9c7e0000 Compatible flash AMD AM29LV800BB

from now i dont know how to make this chip run.
could any help me??
h3k3n

Post by **usbbdm** » Thu Jan 21, 2010 2:09 pm

Are you sure the initial flash is 29LV800BB. That is very small flash. I think you should have at least 2M flash. I have never used this router myself.

bytheface101 · Post by **bytheface101** » Thu Jan 21, 2010 4:38 pm

hi usbbdm,
my router is a wrt54g-v2 the last flash was an intel 28F320C3 , but it was dead.
here in spain there is no chips, so I was looking for in Internet but nothing,
and then I saw a flash chip inside a broken DVD, it was EXCELSEMI ES29LV800BD -70TC , pdf datasheet says it is 8Mb ,
i just soldering in the same position UC5 and I tried with usbjtagnt and now it is detected as you see:
Copyright http://www.usbjtag.com 2008,2009,2010
USB JTAG NT 0.34a
-detect
IDCODE 1471217F
Broadcom BCM4712
IMPCODE 00800904
EJTAG V1, V2.0
DMA supoorted
Found Address= 9c000000 Compatible flash AMD AM29LV800BB
Found Address= 9c7e0000 Compatible flash AMD AM29LV800BB
-tap c
Eco :00000000
-tap a ffffffff
Eco :00012000

I was able to delete and sprogram , but there are anything went wrong.
could you help me?

Post by **usbbdm** » Thu Jan 21, 2010 5:13 pm

This will never work. The initial chip is 4MB (4 Mega byte). Your chip is 1MB. Unless you get the same chip do not try to debrick it.

bengar · Post by **bengar** » Thu Jan 21, 2010 7:18 pm

USBDBM
It is a simple question, could be possible to use the USBJtag NT to debrick Android G1 dream cellphone?. Many people has done a brick in its G1 cellphone from different ways, when they are updating the bootloader (SPL), downgrading to factory roms, or updating roms without the proper applications. Now I found a good pictures about the Jtag points. May you verify it and give me you opinion about that?.

http://forum.xda-developers.com/showthread.php?t=591048

Post by **usbbdm** » Thu Jan 21, 2010 7:23 pm

What is the CPU? If it is MIPS core it is amlost ready. But if it is not well known CPU core then NT might not be ready yet.

USB JTAG

Please post anything that you need to debrick in here.

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