Flashing fails: usb_bulk_send() ERROR -7: Operation timed out

[thore-krug]

Flashing fails: usb_bulk_send() ERROR -7: Operation timed out

[scheckley]

Hey! I have tried changing cables and ports on my computer. But I still get "usb_bulk_send () ERROR -7: Operation timed out".
My sunxi-tools version (1.4.2 + git20181114.6d598a-3).
I can't find 4.1.1-1 that is mentioned above.
I am on Debian Stable 10 Buster :)

I cannot find that version either and I am on the same version of sunxi-tools
I'm on Ubuntu 20.04 LTS

does this work? https://debian.pkgs.org/9/debian-main-amd64/sunxi-tools_1.4.1-1_amd64.deb.html

[TerraRoot]

same issue, downgraded with a deb and comment out the package in the script to stop it updating again until i was done flashing my chip, happy to have it back working again!

[bestouff]

I confirm the fix.

[didier9]

Additional information, outputs from dmesg and lsusb:

[didier9]

Also I had a scope on the 5V going to the CHIP (CHG-IN) and it is perfectly stable during the operation.

[lucasrainett]

I'm having the same problem, also checked the voltage, and tried from different computers
The problem happens when running

from Ubuntu VM on Windows 10 Host and running
from a raspberry Pi 4
from ChromeOS laptop

[didier9]

I saw this post from a little while ago:
"Error -7 is a libusb problem which is mostly caused by bad cable"
But as I posted earlier, I did check the voltage on the CHIP with an oscilloscope and it is stable (I use an external 2A lab supply to power the CHIP). The R-Pi is powered from a 2A USB supply (which I bought from Adafruit with my first R-Pi). I communicate with the R-Pi via ssh, there is no direct connection to the PC.
The USB cable is the one that came with one of my Motorola phones and they are quite good.

[subinsebastien]

I see this problem too.

[scheckley]

It's not necessarily the cable. Check your version of sunxi-tools. I encountered this problem with Debian 10 which has the current stable sunxi-tools version 4.1.2. I rolled back to version 4.1.1-1 and the script then worked for my pocketchip (don't forget to comment out sunxi-tools from the apt install line in the script).

[dementio]

Rolling back to sunxi-tools fixed my "usb_bulk_send() ERROR -7: Operation timed out" issue as well.

[ReubenBTalbott]

This should now be fixed, the script installs an older version of sunxi-tools, it was tested on ubuntu but don't know if it works on debian though it should.

[coffe]

Hey! I have tried changing cables and ports on my computer. But I still get "usb_bulk_send () ERROR -7: Operation timed out".

My sunxi-tools version (1.4.2 + git20181114.6d598a-3).

I can't find 4.1.1-1 that is mentioned above.

I am on Debian Stable 10 Buster :)

[Jonah6411]

Hey! I have tried changing cables and ports on my computer. But I still get "usb_bulk_send () ERROR -7: Operation timed out".

My sunxi-tools version (1.4.2 + git20181114.6d598a-3).

I can't find 4.1.1-1 that is mentioned above.

I am on Debian Stable 10 Buster :)

I cannot find that version either and I am on the same version of sunxi-tools
I'm on Ubuntu 20.04 LTS

[Emzy]

Hey! I have tried changing cables and ports on my computer. But I still get "usb_bulk_send () ERROR -7: Operation timed out".
My sunxi-tools version (1.4.2 + git20181114.6d598a-3).
I can't find 4.1.1-1 that is mentioned above.
I am on Debian Stable 10 Buster :)

I cannot find that version either and I am on the same version of sunxi-tools
I'm on Ubuntu 20.04 LTS

does this work? https://debian.pkgs.org/9/debian-main-amd64/sunxi-tools_1.4.1-1_amd64.deb.html

This fixes it for me on Debian 10 (Raspberry PI4)

[edo9k]

Confirming sunxi-tools downgrade fix.

[pablonoel]

I had the same problem using a RPI4, installed the sunxi tool with no avail.

Reading the oficial Next Thing documentation it says:

"If you are using a computer with USB3 ports, it’s suggested that you attach a USB2-compliant hub and connect your CHIP to the hub, instead of directly to the USB3 port."

So I switched from the usb3 port to the usb2 port of my RPi4 and it worked perfectly fine.

[dorin131]

Here is how you downgrade sunxi-tools on newer versions of Ubuntu based distros.

• Append deb http://de.archive.ubuntu.com/ubuntu/ bionic main universe to /etc/apt/sources.list
• Do sudo apt update
• Install the package: sudo apt install sunxi-tools=1.4.1-1
• Mark hold to prevent upgrade: apt-mark hold sunxi-tools
• To prevent any other complications Remove deb http://de.archive.ubuntu.com/ubuntu/ bionic main universe from /etc/apt/sources.list

Then you can flash.

[wersimmon]

Here is how you can downgrade sunxi-tools on Debian

• Add a source that has the older version of sunxi-tools: nano /etc/apt/sources.list and append deb http://deb.debian.org/debian/ stretch main
• Update apt's cache: sudo apt update
• Install the package: sudo apt install sunxi-tools=1.4.1-1
• Mark hold to prevent it from being upgraded: apt-mark hold sunxi-tools
• To avoid complications you can remove stretch main from the sources.list again

[TroyFletcher]

Hey! I have tried changing cables and ports on my computer. But I still get "usb_bulk_send () ERROR -7: Operation timed out".
My sunxi-tools version (1.4.2 + git20181114.6d598a-3).
I can't find 4.1.1-1 that is mentioned above.
I am on Debian Stable 10 Buster :)

I cannot find that version either and I am on the same version of sunxi-tools
I'm on Ubuntu 20.04 LTS

does this work? https://debian.pkgs.org/9/debian-main-amd64/sunxi-tools_1.4.1-1_amd64.deb.html

Downloading this deb file, and downgrading fixed the issue, but you must comment out the flash.sh script's apt install of the tools, as this will re-upgrade the package you just downgraded.

Running Flash.sh with the sunxi-tools 1.4.1-1 solved the issue for me!