G1 Mini Mining Problem

Mining
1

Hello,

Recently, three of my G1 mini units have stopped hashing and I am a little lost as far as determining root cause of the issue. Some information below:

  • All units were operational and worked fine ranging from 8 months to 18 months.
  • All G1 mini’s show on local network, show no LED issues (green light on miners), and no power supply issues.
  • No fan-related issues, they all seem to be working normally.

When the minis are initially turned on, the dashboard indicates a generic “connection refused” error. However, when the minis are reset manually, they show that they are getting work but not accepting any work with a Gps of 0.00 regardless of how long they are plugged in and running.

What I have tried so far that have not resolved the hashing issues:

  • Connecting G1 mini’s directly to router to see if it’s networking related
  • Trying different power supplies
  • Downloading firmware archive from a working G1 mini and overwriting them to the non-working G1 minis.

I also took a look at the system log to try and do some diagnostics but it’s not my forte. They can be found here: Mon May 5 17:27:25 2025 kern.info kernel: [ 0.000000] Booting Linux on physi - Pastebin.com

If anyone has any tips or suggestions to get these G1 minis fixed, I would appreciate it very much.

2

Be sure you’re running version G2.54 for firmware installed by microSD card.

3

I’ve had this problem many times，I’ll try restarting.If it doesn’t work, I’ll send it for repair

4

Yes to confirm, they are all running firmware 2.54. My next plan is to flash them again via microSD card to see if that does anything. First, I’ll try downgrading to a different firmware, then back to 2.54.

Do we need some special device to flash G1 mini with microSD? The slot for putting it in on the unit is much bigger than the SD card itself. Are there any instructions for doing this? I’ve never had to do this before.

1 Like
5

It is very frustrating indeed. I am still confused if this is a hardware issue or a software issue to be honest.

6

Angle the microSD downward when inserting it, I’ve missed a few times and had to remove the case to retrieve it. And any microSD should work, I use 4GB swissbit units but they’re overkill.

1 Like
7

With G1-mini off/unpowered, insert microSD card w/ G2.54, unplug Ethernet cable, power on. Green LED will be solid, when it starts flashing some minutes later you can power off, remove microSD card, reconnect Ethernet cable, power on, then reconfigure in web control panel.

1 Like
8

Oh okay. So no formatting of SD card needed? Just add the firmware in same format it is downloaded to SD card, then follow @Neo-Geo’s comment to update it.

Another G1 mini went down :frowning: feels bad man.

9

You need to use a program to image the img file to the card like what you’d use when making a bootable usb for a PC. I use Linux so I just use the built in GNOME disk image writer.

10

Oh okay, so not as straightforward as I believed. Can you please provide me some more details please? What exactly do I need to do with the downloaded firmware?

Thank you for you help.

11

I can write a step-by-step guide for everyone since this information isn’t really well known and others may also ask in the future.

1 Like
12

Use this program to image the drive with the .img file

Just open it, choose the img and drive to flash to, and start it. I’ll add your instructions you make to grinminer.net for others to use.

13

Try to switch the power adapter with the working machine?
May you also try some of my steps in this thread? [Help] How to unbrick miner ipollo g1 mini - #8 by transatoshi
Then I re-updated the firmware and it was fine.

14

Hi! Yes, I have tried using different, functional power adapters but that did resolve the issue.

I have read through this thread as well but I am a little confused with the SD formatting/flashing step and need some clarification please. Maybe @transatoshi can add here as well to confirm.

Steps:

  1. Download SDCARD v2.54
  2. Using balenaEtcher, flash the V2.54 img file into the microSD card.
  3. Unplug G1 mini’s ethernet + power.
  4. Put microSD card into the TF card slot and turn G1 mini power back on.
  5. Wait 5 minutes. It’s expected that both green and red LEDs will be on during this time.
  6. Remove microSD card from G1 mini.
  7. Plug ethernet back in and reboot miner.
  8. ???
15

Your steps are all correct. Once you wait the 5 or so minutes the green light on front will be flashing and the red will turn off. That’s your sign to unplug the miner and remove the SD card then it should be all good to go with the default settings when you turn it back on.

16

Hi navie. Were you able to recover the G1 mini’s? I have a few minis and two of them recently quit hashing. I tried:

  • Swapping power supplies
  • Resetting config
  • Reloading firmware back to 2.5.2 and 2.5.4 via browser and sd card

The main indicator I can see between a working and not working unit is in the API log. My working units declare themselves as a G-Model=Mini:

[Firmware Version] => microcomputer - 20221209
    version: v2.5.4
    luci: 59309ba
    cgminer: 
    cgminer-packages: dd85c96
    openwrt: 8822b57
    ...
    asic_accepted[0 0 0 0 0 0 0 0 0 0]
    asic_rejected[0 0 0 0 0 0 0 0 0 0],G-Model=Mini,enable_port=1,Algo=grin,Unit=G/s,Hashrate=...

Non-working units log a G-Model=Normal:

[Firmware Version] => microcomputer - 20221209
    version: v2.5.4
    luci: 59309ba
    cgminer: 
    cgminer-packages: dd85c96
    openwrt: 8822b57
    ...
    asic_accepted[0 0 0 0 0 0 0 0 0 0]
    asic_rejected[0 0 0 0 0 0 0 0 0 0],G-Model=Normal,enable_port=255,Algo=grin,Unit=G/s,Hashrate=0.000000
17

Hi! No, unfortunately not yet. I am still working on it but have not had time to try recently.

Thanks for the log info, that’s interesting. Did your methods help and fix the non-working units?

I believe the affected miners stopped working for me during a power outage/thunderstorm for me.