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  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Mon Aug 31, 2020 0:40   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
I wonder if you're seeing the effects of lead-free solder after years of thermal cycling. In your situation, I'd writer off the router as deceased, warm up the board, break out the flux and heatgun a ...
  Topic: Help needed. cfe.bin for DIR-895L router
fizikz

Replies: 59
Views: 6180

PostForum: Broadcom SoC based Hardware   Posted: Thu Aug 27, 2020 5:38   Subject: Help needed. cfe.bin for DIR-895L router
So I got the new USB to serial cable. However, the router refuses to turn on if the cable is plugged in to the serial port. The router turns on if the cable is not plugged in to the serial power. Any ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Wed Aug 26, 2020 18:56   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
Ok, time to answer a lot of my questions:

* CFE stands for Common Firmware Environment, a bootloader used in some devices. Other devices use uboot.

* The commands available in CFE vary between m ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Tue Aug 25, 2020 17:08   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
Recovering this device isn't difficult, though. The internal tftpd process on the router shouldn't require anything other than launching manually, AFAIK?
Yes, but how do I transfer files without eth ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Tue Aug 25, 2020 16:32   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
hmmm... there used to be a serial recovery via kermit for windows in DDWRT wiki now i don't see it

Kermit (c-kermit) is available in linux too, and minicom lists it along with other protocols (xmod ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Mon Aug 24, 2020 16:36   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
Thanks for the CFE file.
final words as your switch is not working in CFE mode than is seems to be toasted, but than again you should be capable to upload firmware via serial...
https://forum.dd-wr ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Sun Aug 23, 2020 19:21   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
I dunno man, can you Ctrl+C your way into CFE? The output you showed earlier stops before Device eth0 is displayed.

If it's crapping out due to problems accessing Ethernet, you know it's done.

A ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Sun Aug 23, 2020 19:05   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
Anything useful in the serial output posted above? CFE version was asked about before.

Never mind. Other than connecting the USB just before power on, not sure what else to recommend (shouldn't ne ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Sun Aug 23, 2020 18:33   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
Using the 3 central connector pins (TX, RX, GND), I presume.

Yes, here's a picture to make it clearer, and the state of the LEDs when the booting is stuck.

https://i.imgur.com/zEaQCBz.jpg

h ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Sun Aug 23, 2020 2:56   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
It's the DSD Tech SH-U09C3 with the FTDI FT232RL chip: https://www.amazon.com/DSD-TECH-SH-U09C3-Isolated-Featuring/dp/B07TS3GPQ1/

The pinout I'm using when viewing the router's 4 serial pins from t ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Sun Aug 23, 2020 2:20   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
Actually, it blocks the boot even if minicom is not running. If the serial adapter is connected and powered by USB before powering the R7000, the R7000's 4 white LAN LEDs go on and stay on indefinitel ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Sat Aug 22, 2020 9:08   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
Is this with only TX, RX, and GND attached? You do not connect the Vcc lead.
Correct.

This is my first experience with serial and minicom, so maybe there's an issue with my settings or procedure ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Sat Aug 22, 2020 7:49   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
USB to serial adapter arived:
Digital core power voltage set to 1.0V

SHMOO VER 1.13

PKID07DC06011801080000000000001A103F01000000

S300001B3
00001180


RDLYW0 00000004

RDENW0 00000032
...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Tue Aug 18, 2020 3:52   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
I tried the reset exactly as described, to no avail.

I'm thinking of getting one of the serial USB devices suggested above, but it'll be a while before I'll have it. I'm not too optimistic though. ...
  Topic: What's going on with my R7000?? Don't die, Nighthawk! ;(
fizikz

Replies: 59
Views: 3239

PostForum: Broadcom SoC based Hardware   Posted: Mon Aug 17, 2020 20:31   Subject: What's going on with my R7000?? Don't die, Nighthawk! ;(
Is there a way to confirm or rule out whether the issue is indeed with the ethernet switch chip?

I already tried the power brick from my other R6900/7000, and it made no difference.

There was no ...
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