Connecting to an embedded Linux device over USB

From	bitrex <bitrex@de.lete.earthlink.net>
Subject	Connecting to an embedded Linux device over USB
Newsgroups	comp.arch.embedded
Message-ID	<i9gdz.8$Kk2.7@fx10.iad> (permalink)
Organization	frugalusenet - www.frugalusenet.com
Date	2016-06-30 17:27 -0400

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I have a piece of hardware (drum machine) which I know runs a version of 
Busybox on an Intel Atom platform, I think.

It appears to have 256 megs of RAM and a gig of internal Flash storage.

I'm trying to figure out what the best way to hopefully ssh into the 
device and gain root would be, as it seems there's a corrupted file in 
the Flash storage that's causing it to crash repeatedly when using its 
custom user file manager. I've tried doing a factory reset and 
reinstalling the latest OS from an SD card - it has both types of USB 
ports and two SD card slots to connect external storage - but apparently 
the factory reset didn't wipe the user partition of the Flash and the 
corrupted file remains.

When connected via USB to a Linux PC it appears under "lshw" as:

*-usb:2
                       description: Audio device
                       product: Beat Thang
                       vendor: BKE, LLC
                       physical id: 3
                       bus info: usb@1:3.3
                       version: 2.25
                       capabilities: usb-2.00 audio-control
                       configuration: driver=snd-usb-audio 
maxpower=500mA speed=480Mbit/s


When Googling for information a Reddit user claimed to be able to ssh 
into the and examine the hardware capabilities and file system, but I 
wasn't able to contact him.

Any advice on where to begin?

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Thread

Connecting to an embedded Linux device over USB bitrex <bitrex@de.lete.earthlink.net> - 2016-06-30 17:27 -0400
  Re: Connecting to an embedded Linux device over USB Grant Edwards <invalid@invalid.invalid> - 2016-06-30 21:46 +0000
    Re: Connecting to an embedded Linux device over USB bitrex <bitrex@de.lete.earthlink.net> - 2016-06-30 17:48 -0400
      Re: Connecting to an embedded Linux device over USB Grant Edwards <invalid@invalid.invalid> - 2016-06-30 22:06 +0000
        Re: Connecting to an embedded Linux device over USB bitrex <bitrex@de.lete.earthlink.net> - 2016-06-30 18:07 -0400
          Re: Connecting to an embedded Linux device over USB Grant Edwards <invalid@invalid.invalid> - 2016-06-30 22:14 +0000
  Re: Connecting to an embedded Linux device over USB Don Y <blockedofcourse@foo.invalid> - 2016-06-30 15:15 -0700
  Re: Connecting to an embedded Linux device over USB Theo Markettos <theom+news@chiark.greenend.org.uk> - 2016-06-30 23:46 +0100
  Re: Connecting to an embedded Linux device over USB lasselangwadtchristensen@gmail.com - 2016-07-01 12:45 -0700
    Re: Connecting to an embedded Linux device over USB bitrex <bitrex@de.lete.earthlink.net> - 2016-07-01 15:46 -0400

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