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  #1  
Old 04-27-2016, 01:20 PM
stolichnaya stolichnaya is offline
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Default cm500 Modem USBJtag Pinout

I was wondering is it possible to USBjtag the soic chip on cm500?

I'm waiting on on new programmer mines fried just kinda. Bored any help appreciated. Pinouts? Thanks..

Flash chip is located on the bottom and is a Winbond-W25Q64FV



(http://www.winbond-usa.com/resource-...vl1_100713.pdf
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  #2  
Old 04-27-2016, 03:36 PM
usbbdm usbbdm is offline
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This is SPI flash, you can use SPI programming. If there is JTAG port then we need to know the CPU and see if it is possible to add support to it.
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  #3  
Old 04-27-2016, 10:30 PM
stolichnaya stolichnaya is offline
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MemSize: 128 M
Chip ID: BCM3843D-B0

BootLoader Version: 2.5.0alpha8 Release spiboot dual-flash avs
Build Date: Apr 25 2014
Build Time: 13:00:50
SPI flash ID 0xef4017, size 8MB, block size 64KB, write buffer 256, flags 0x1
Cust key size 128



I attached a serial and went into bootloader options. Its a noisy bootloader as far as me being able to load what bank i want to choose or running tftp and booting images. But once image is loaded i lose access. Anyone happen to have or know of the noisy bootloader for modem I know this exists..

Here are the SERIAL logs from Putty.
http://pastebin.com/eKdKwj3a

Pictures of Front and Back of modem



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  #4  
Old 08-30-2016, 10:48 AM
ictvtec ictvtec is offline
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nothing on this modem?
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  #5  
Old 08-30-2016, 06:46 PM
demonspride demonspride is offline
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I had an unlocked bootloader, with an unshadowed nonvol fw, but it was posted at SBh, which is gone, and unfortunately, I lost all my backups to a hdd failure... only think i can suggest is try to crash the modem by shorting tdi to gnd while the fw image loads.
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  #6  
Old 08-30-2016, 06:53 PM
ictvtec ictvtec is offline
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Well that just sux...
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  #7  
Old 03-27-2017, 01:05 PM
abescalamis abescalamis is offline
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Quote:
Originally Posted by demonspride View Post
I had an unlocked bootloader, with an unshadowed nonvol fw, but it was posted at SBh, which is gone, and unfortunately, I lost all my backups to a hdd failure... only think i can suggest is try to crash the modem by shorting tdi to gnd while the fw image loads.
You should contact dw5304, if I'm not mistaken he was the first one to flash that modem and made it like a SB6183, he knows how.
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Old 04-01-2017, 12:34 PM
CAPONE CAPONE is offline
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Quote:
Originally Posted by stolichnaya View Post
I was wondering is it possible to USBjtag the soic chip on cm500?

I'm waiting on on new programmer mines fried just kinda. Bored any help appreciated. Pinouts? Thanks..

Flash chip is located on the bottom and is a Winbond-W25Q64FV



(http://www.winbond-usa.com/resource-...vl1_100713.pdf
The ISP for this Modem will be to the front of the board.
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  #9  
Old 04-02-2017, 02:28 PM
deestee deestee is offline
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Quote:
Originally Posted by CAPONE View Post
The ISP for this Modem will be to the front of the board.
would you mind pointing t out, I had tried quite hard to find it..
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  #10  
Old 04-08-2017, 07:09 PM
CAPONE CAPONE is offline
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Quote:
Originally Posted by deestee View Post
would you mind pointing t out, I had tried quite hard to find it..
Sent E-Mail.
Picture has Instructions.
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