Debian on Dell Wyse 3020

Big disappointment with this box Ethernet.

Since the chip is USB 2.0 Ethernet, it drops data like crazy in my flow-control-off Gbit network. Not usable for anything serious.

Now that I looked closer, it's the same chip in the previous rPi boards. That was a big flaw in those boards design.

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Yep, perfomance of those boxes sucks. I'm using one as a wireguard gateway for admin access to my remote cabin which has only a low speed gsm connection so it is enough, but its performance limits other uses.

Tried running the script. It stops with “Line 4: Unsupported command” regardless of the USB device

Giunto Wrote:
-------------------------------------------------------
> Tried running the script. It stops with “Line 4:
> Unsupported command” regardless of the USB
> device


Solved it by flashing from bare metal instead of a virtual machine. Now, I need to access it via SSH. Does this Debian support SSH via OpenSSH by default, or do I need to crack the hardware open?

I have successfully gotten one of my 3020 boxes to boot from USB with the updated 6.14.6 kernel and the 6.6.2 rootfs, but am experiencing the same problems as mmm, where wloader jams the eMMC if USB boot is not selected before eMMC is read by wloader. My wloader firmware seems to be the same major version (7.1_212) as mmm's (7.1_216), so I imagine the cause is the same or similar. Has any progress been made on flashing the SPI from within Linux? I would like to attempt flashing one of Ksuszka's firmware dumps to see if this solves the issue.

Phaze Henot,

> Has any
> progress been made on flashing the SPI from within
> Linux? I would like to attempt flashing one of
> Ksuszka's firmware dumps to see if this solves the
> issue.

I have not looked into how to flash this boot loader in Linux. I need a recovery mechanism before I'd try flashing Ksuszka's firmware dumps. Not sure if we've figured that out how in this thread. If there is a way, e.g. firmware on USB recovery, then I will try.

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Understandable, in that case, I have ordered a CH341A programmer so that I may attempt to flash the chip directly, as well as recover from any unsuccessful testing. With this, I should be able to verify if it is solely the wloader version causing the eMMC issues. If this is the case, I should be able to experiment with different methods of flashing the firmware from within Linux. Are there any approaches or tests you would like me to try?

mmm has tried here:

https://forum.doozan.com/read.php?2,134563,136711#msg-136711

Gravelrash has tried here:

https://forum.doozan.com/read.php?2,134563,135491#msg-135491

That is how you flash boot loader to SPI (with flashcp). But unfortunately it did not work.

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ksuszka has info about recovery here:

https://forum.doozan.com/read.php?2,134563,137486#msg-137486

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I have created a script that formats and partitions a USB drive as a "USB Imaging Tool" compatible with the "Dell Wyse USB Imaging Tool v2.0.9." I have validated its ability to push and pull device images from 3020 devices. Pushing an image to a device works on all devices I have tested, but pulling is somewhat finicky on devices with Debian installed.

Two important things to note, however, are that sometimes the eMMC fails to initialize, which prevents the pull/push from working (as there is no drive to pull or push from/to), and the screen always has at least some graphical corruption. This does not seem to affect the functioning of the tool, and it's usually not bad enough to prevent use, but it is a bit annoying.

The device images contain both a copy of the hard drive and the wLoader flash, which are compressed with LZMA before being copied to the USB drive (Takes a very long time). I have had mild success modifying a device image to flash custom hard drive images to a device, but also bricked another device while attempting to flash openFirmware to it, so it needs a bit more work.

Here is the link to the GitHub repo for anyone interested (https://github.com/StrayerRussell/DellWyseUsbImager.git)