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  #1  
Old 06-04-2016, 05:09 PM
cheeto cheeto is offline
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Default SB6141 flashing, impossible mission

Hi folks,
I just finished flashing a sb6121 using this sequence:

All worked perfectly fine.


Now I am trying to flash a sb6141. No can do.

I tried the same sequence mentioned above, but i cant get it to work.
I also tried this:


Still no luck!

I also tried 2 different usbttl hooked up to flash 2 and still no go.

Can anyone help?

thanks!!
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  #2  
Old 06-04-2016, 10:29 PM
marthypaul marthypaul is offline
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U probably blew off this small resistor where u solder a wire.
never, never, never solder anything to any ends of theses small resistors. By soldering to any ends usually damage this resistor. Same happen to capacitors.
Read on internet about damages on this type of capacitors and resistors.

You have to replace this resistor with the same exact resistor, probably could be done with heat air gun, and some masking/protecting adjacent chips.
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  #3  
Old 06-05-2016, 05:25 PM
cheeto cheeto is offline
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I ignored putting on a resistor since my soldering skills aren't that great. I thought that adding a resistor was optional.

Shouldn't I be able to use a standard usb cable and grab the 5v from there? (like I did with the sb6120)

Thx
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  #4  
Old 06-08-2016, 10:11 PM
cheeto cheeto is offline
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Nevemind, case closed. 3.3v to vcc is the solution
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  #5  
Old 06-10-2016, 05:00 PM
CAPONE CAPONE is offline
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It can be Done without the 3 Volt Method, However no one has ever posted the ISP point for that Model. I found it but Have Never shared that or other Modems that I have found the ISP Point to.

There are many Modems that are not even talked about here that I have tested with.

BTW, You were on the right path.......... Don't give up.
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Last edited by CAPONE; 06-10-2016 at 05:10 PM.
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  #6  
Old 06-11-2016, 01:41 AM
cheeto cheeto is offline
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After reading every thread on this board regarding the 6141 I came to the conclusion that the best way to go is 3.3v on pin 2.
This rule can be applied to many modems out there.
However now, we're entering a new Era... Have you seen the mobo of a 6582 or 6700?
Although I'm yet to have one, I've been doing some reading on them and it's a whole new ballgame. Forget about 3.3v. In fact, I'm not too sure you can even use a usbjtag. Crap, I thought I had finally caught up..... There is always something new to learn I guess.
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  #7  
Old 06-13-2016, 09:12 AM
Carlito's way Carlito's way is offline
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Default The new era

I've heard some hints of the new stuff and was wondering if it's true that latest devices won't have JTAG point as some euro boxes?
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  #8  
Old 06-14-2016, 09:12 AM
ricktendo ricktendo is offline
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I prefer the 3.3v external power when I flash my sb6121 as well, I use my UART flasher to provide this



Yes the newer modems seem to be moving towards bga chips, these are still flash-able but you may need to desolder them from the board or trace the pinout from the circuit board






Last edited by ricktendo; 06-14-2016 at 09:14 AM.
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  #9  
Old 06-14-2016, 09:47 AM
cheeto cheeto is offline
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Default new era

YES, spi to flash pin 2 is by far a safer way to go. In fact I thrashed a sbg6580 trying to hook up the isp. I never had luck with my usbttl +3v. Instead, I used a pc power supply. (flawless)


Regarding the new era of flashing, glad to hear that these modems are still flashable. I hope it could be done with the usbjtagnt. Have you actually flashed one of these yet? I might actually buy one just to experiment.

Perhaps and I HOPE someone will come out with some kind of solderless solution. Like SOIC or Pomona 5252 clip.

Perhaps all docsis 3.1 modems will have these new boards...

The new era is here.
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  #10  
Old 08-05-2016, 06:15 AM
geant90 geant90 is offline
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5V can be used, you just did not follow the steps written in the original tutorial. Have the modem boot normally then add 5v to chip. Then kill the power to the modem and you should be able to detect.
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