can some one help with a project

[richard2012uk]

hello all newbe here to this forum

i was wondering if some one could help out on a little project

i have a webstar dpx100 modem with a bcm3345kpb and a st tsop

it has been flashed and bricked by virginmedia to config "cm-update.bin"

it has a serial port but i am unable to get any response from it via telnet

i belive thats due to the firmware !!!

i'm sure it can be reflashed via a jtag but need some one with a little more

experiance than i have finding the points at where a jtag would be wired too

i think these modems can run on Infinite firmware or fercse

thank you in advance for any input

Richard

[one[]eye]

hi
the dpx broadcom is the same as an sb4200, therefor you will need the sb4200 firmware running on the dpx100.

and the only way i know is to program the chip with a willem/16 bit adapter, you wont be able to jtag these modems becoase there are only 6 pins on the board.

regs
OE

[tester5]

you only need 5 pins..to program find the correct setting and you can program if like that guy said its same as 4200 design must have same tuner too.

each pin is protected by a 102 rez look close if you got couple 102 in series to those pins then that is jtag.

[usbbdm]

Do not be confused for 5 pin or 6 pins. You must make sure the pins are for JTAG first. I now have seen 10 pin JTAG (SB5100,SB5101),12 pin modem (SB5120). 8 pin modem.(DPC2100).
For JTAG to work you need TDO,TDI,CLK,TMS (TRST optional) and ground. (sometime I forgot to mention ground in my pages and people ask why it working, especially on dish receivers.)

[tester5]

TDO,TDI,CLK,TMS can program with this and ground only? didnt know