Lucky Miner LV08 - Firmware

[njr72]

Hi
I bought a LV08 and I didn't realised the software was so locked down.  I have a BitAxe Gamma, and this is great.
Since the LV08 has "no upgrade Firmware" option, does anyone have any details on how I can put a different firmware onto it ?
I don't want to brick it, but I always don't want the (probably) untrustworthy Firmware on it.

THANKS

[iambonkerz]

Hi
I bought a LV08 and I didn't realised the software was so locked down.  I have a BitAxe Gamma, and this is great.
Since the LV08 has "no upgrade Firmware" option, does anyone have any details on how I can put a different firmware onto it ?
I don't want to brick it, but I always don't want the (probably) untrustworthy Firmware on it.

THANKS

I am using a CP2104 USB to TTL Flasher.

The 6 pins are located near the esp32.
https://i.ibb.co/Z6yPfGJS/Screenshot-2025-03-18-at-11-06-57-AM.jpg

1. Hardware Connections:
- Connect GND on the CP2104 to GND on the LV08.
- Connect RX on the CP2104 to TX on the LV08.
- Connect TX on the CP2104 to RX on the LV08.

2. Entering Programming Mode:
- Power up the LV08.
- Short the GND and IO0 pins on the LV08.
- While keeping them shorted, press the reset button on the LV08.
- After pressing reset, remove the short between GND and IO0.

3. Flashing the Unlocked LV08 Factory Firmware with any of the following tools
- Bitaxetool (bitaxetool --firmware ./esp-miner-factory-lvxx-vx.x.x-x.x.x.bin)
- ESPTool (esptool.py --port PORT --baud 230400 write_flash 0x000000 ./esp-miner-factory-lvxx-vx.x.x-x.x.x.bin)
- Web Adafruit ESPTool (offset 0x000000)

[dec93]

Have updated my lv08 to v2.6.1-1.0.3 from stock firmware v. 1.0.0. What i noticed is that WiFi connection became more stable ping around 3-10 ms, asic temperature lower to 5-7 degrees, fans quieter.
Thank you!

[iambonkerz]

Have updated my lv08 to v2.6.1-1.0.3 from stock firmware v. 1.0.0. What i noticed is that WiFi connection became more stable ping around 3-10 ms, asic temperature lower to 5-7 degrees, fans quieter.
Thank you!

You're quick with the update. I just released v2.6.1-1.0.4 to fix some backend code, so you might want to update to that version.

[dec93]

You're quick with the update. I just released v2.6.1-1.0.4 to fix some backend code, so you might want to update to that version.

Done! Updated via web interface with esp-miner.bin and www.bin. Testing... 600 mhz, 1.2 v, 118.6 w. Asic t° = 55, VRT = 66.

[JohnnyBitGoode]

Done! Updated via web interface with esp-miner.bin and www.bin. Testing... 600 mhz, 1.2 v, 118.6 w. Asic t° = 55, VRT = 66.

118.6 Watts on Dashboard or from watt meter (at the wall)?

Also, what is the consistent hash-rate when it has leveled out?

If it's below the expected hash-rate, then it needs a few more millivolts. 

Otherwise well done...

[dec93]

118.6 Watts on Dashboard or from watt meter (at the wall)?

It's from dashboard, don't have watt meter.

Also, what is the consistent hash-rate when it has leveled out?

If it's below the expected hash-rate, then it needs a few more millivolts. 

well, hash-rate is not stable it jumps from 4.2 to 5.8. Expected = 4.83 and average (after 15-20 min of monitoring) = 4.9.

https://talkimg.com/images/2025/03/31/lJ2sG.png

[brontolo10]

@Iambonkerz
Thank you very much for your great job!

Hi guys,
Preorder now of the new luckyminer LG07 scrypt LTC!!!

https://a.aliexpress.com/_EGOYCxQ

B10

[JohnnyBitGoode]

well, hash-rate is not stable it jumps from 4.2 to 5.8. Expected = 4.83 and average (after 15-20 min of monitoring) = 4.9.

https://talkimg.com/images/2025/03/31/lJ2sG.png

I'm running my four LV08 miners at expected hash-rate  of 3.42 TH/s (going for efficiency and cooler temps as it's just past summer here so it's still quite warm) and all four are a little over 3.5 TH/s each. At this hash-rate, all miners are between 70 and 73 watts on the dashboard (a little more at the wall of course).

Still running v2.5.1 but I do like some of the added features on v2.6.1. Unfortunately I have a fair bit of other code that I will have to manually add for some extra logging that I like to see. As well as a few data tweaks. It's a bit time consuming to do everytime I update!  

[dec93]

iambonkerz, after some time, I noticed that LV08 with latest firmware has twice as much shares compared to LV07 for the same time. How do you think is it ok or should i roll back to an older version?

https://talkimg.com/images/2025/04/04/lK7JN.png

[unpainted]

iambonkerz, after some time, I noticed that LV08 with latest firmware has twice as much shares compared to LV07 for the same time. How do you think is it ok or should i roll back to an older version?

The number of shares transferred depends on the pool, the miner and chance. They cannot be compared in this case.

[iambonkerz]

iambonkerz, after some time, I noticed that LV08 with latest firmware has twice as much shares compared to LV07 for the same time. How do you think is it ok or should i roll back to an older version?

https://talkimg.com/images/2025/04/04/lK7JN.png

a higher hashrate miner generally leads to more accepted shares, the difficulty level set by the mining pool also plays apart with the shares. What you have there looks normal since the rejected shares are still quite low

[dec93]

unpainted, iambonkerz thank you for your explanation!!! ) It makes sense.

[DoDaCs]

Hi
I bought a LV08 and I didn't realised the software was so locked down.  I have a BitAxe Gamma, and this is great.
Since the LV08 has "no upgrade Firmware" option, does anyone have any details on how I can put a different firmware onto it ?
I don't want to brick it, but I always don't want the (probably) untrustworthy Firmware on it.

THANKS

I am using a CP2104 USB to TTL Flasher.

The 6 pins are located near the esp32.
https://i.ibb.co/Z6yPfGJS/Screenshot-2025-03-18-at-11-06-57-AM.jpg

1. Hardware Connections:
- Connect GND on the CP2104 to GND on the LV08.
- Connect RX on the CP2104 to TX on the LV08.
- Connect TX on the CP2104 to RX on the LV08.

2. Entering Programming Mode:
- Power up the LV08.
- Short the GND and IO0 pins on the LV08.
- While keeping them shorted, press the reset button on the LV08.
- After pressing reset, remove the short between GND and IO0.

3. Flashing the Unlocked LV08 Factory Firmware with any of the following tools
- Bitaxetool (bitaxetool --firmware ./esp-miner-factory-lvxx-vx.x.x-x.x.x.bin)
- ESPTool (esptool.py --port PORT --baud 230400 write_flash 0x000000 ./esp-miner-factory-lvxx-vx.x.x-x.x.x.bin)
- Web Adafruit ESPTool (offset 0x000000)

What command did you use to save the original firmware. Thanks for the porting the AxeOS...

[iambonkerz]

Hi
I bought a LV08 and I didn't realised the software was so locked down.  I have a BitAxe Gamma, and this is great.
Since the LV08 has "no upgrade Firmware" option, does anyone have any details on how I can put a different firmware onto it ?
I don't want to brick it, but I always don't want the (probably) untrustworthy Firmware on it.

THANKS

I am using a CP2104 USB to TTL Flasher.

The 6 pins are located near the esp32.
https://i.ibb.co/Z6yPfGJS/Screenshot-2025-03-18-at-11-06-57-AM.jpg

1. Hardware Connections:
- Connect GND on the CP2104 to GND on the LV08.
- Connect RX on the CP2104 to TX on the LV08.
- Connect TX on the CP2104 to RX on the LV08.

2. Entering Programming Mode:
- Power up the LV08.
- Short the GND and IO0 pins on the LV08.
- While keeping them shorted, press the reset button on the LV08.
- After pressing reset, remove the short between GND and IO0.

3. Flashing the Unlocked LV08 Factory Firmware with any of the following tools
- Bitaxetool (bitaxetool --firmware ./esp-miner-factory-lvxx-vx.x.x-x.x.x.bin)
- ESPTool (esptool.py --port PORT --baud 230400 write_flash 0x000000 ./esp-miner-factory-lvxx-vx.x.x-x.x.x.bin)
- Web Adafruit ESPTool (offset 0x000000)

What command did you use to save the original firmware. Thanks for the porting the AxeOS...

You can check the partitions.csv file to choose the address you'd like to back up.

esptool.py --port PORT --baud 230400 read-flash 0x000000 0x710000 backup.bin

[fromport]

Is it possible to open the "issues" option on github so people can respond there in case there are issues?

[brontolo10]

Hi guys,
   I have update my two luckyminer Lv07 with the last stabile 2.6.1 firmware from https://github.com/mrbonkerz/ESP-Miner-LVXX with 575Mhz/1.200v setup.

I use the factory fan with manual setup to 85% speed: the Asic temp Is 49/50 C. I replaced the noctua 12v because It not works well: It runs at max 2000 RPM, too low.

Also I am testing the new luckyminer LG07 Scrypt: It works very good on molepool on LTC+DOGE+BELL.
This miner works on 650Mhz/6.50v with a very low temp of 38 C for 11M hashing and 10w.
I replaced the fan with a noctua 12v that run below 2000 RPM, very silent miner...

B10

[iambonkerz]

Hi guys,
   I have update my two luckyminer Lv07 with the last stabile 2.6.1 firmware from https://github.com/mrbonkerz/ESP-Miner-LVXX with 575Mhz/1.200v setup.

I use the factory fan with manual setup to 85% speed: the Asic temp Is 49/50 C. I replaced the noctua 12v because It not works well: It runs at max 2000 RPM, too low.

Also I am testing the new luckyminer LG07 Scrypt: It works very good on molepool on LTC+DOGE+BELL.
This miner works on 650Mhz/6.50v with a very low temp of 38 C for 11M hashing and 10w.
I replaced the fan with a noctua 12v that run below 2000 RPM, very silent miner...

B10

Can you provide some of the log from the LG07? I'm curious what version of firmware they are running.

[RiceNL]

Hey man, first of all, thanks for you work! I got into these things a while ago. Ordered one, until I saw that they are closed source, which was a bummer. I was like: Isn't there a way to make these open source again? So I went on Google and got here. Decided to order some wires, a JTAG pin block, a CP2104 and here we are. Last weekend I finally made the attempt to solder the JTAG block on. Seems easy, but I think I had my soldering iron a bit to cold, because I needed a few attempts at it in order for it to work. The solders seemed nice, but somehow I didn't get a connection via the CP2104. Tried a different CP2104, and that also did not work, until I finally got some results while reading the device, but the characters were not readable. So I got my multimeter out, and checked my connections, only to find out the solder for the GND was not great. It made contact, but not great. So, bumped up the temps on the soldering iron and went over everything again, and then it finally worked It was kinda rewarding to see the logfiles scroll through my debugger screen. It's also pretty responsive. Quite surprised! So, now with the connection fixed, I went and flash the stable release with the configuration using bitaxetool. And it worked. Did some testing. Let it mine for a bit. Checked the temps, everything was fine.

Then I saw that there is a new version on Github, which is: v2.6.6b1-1.0.6. Flashed that, and that also seemed to work. The only problem was, that the temps went up on the ASIC pretty fast. That is when I saw that the fanspeed was pretty low. Around 900 to 1000 RPM on automatic. And it does not ramp up when the temps increase. So i quickly set the fanspeed manually to 80% and that is fine. ASIC temps are now around 59 degrees celcius.

Is this a known issue with this version?

I got to say, I removed the original fans, and put on a 3D printed fan shroud, to fit a 140mm fan on the back of the case (To have airflow to the PSU too). But that worked well with the other firmware. So it seems like it's an issue with version v2.6.6b1-1.0.6 for me. For now I will keep the fan speed on manual @ 80%. But it would be nice if I could use the automatic fan control again. The fan I use is this one: https://www.bequiet.com/en/casefans/3706 - This is a great upgrade If anyone wants to use it, make sure that you have airflow to the PSU and set the fan to UHS (ultra high speed) because otherwise it will be quiet for sure, but it won't flow enough, so it won't cool the device down enough.

Oh i also removed the heatsinks, and removed the stock thermal paste. Put on ThermalGrizzly Kryonaut. That didn't lower the temps much, maybe 1 degrees celcius, if anyone was wondering. But I think it will be better for the long run, because the stock thermal paste is kinda meh. Also put some thermal pads on those silver blocks, near the VRM's? Is that correct? Those didn't make any contact with the stock heatsink.

Anyway, thanks for everything! Feels good to have this thing open source again.

[iambonkerz]

Hey man, first of all, thanks for you work! I got into these things a while ago. Ordered one, until I saw that they are closed source, which was a bummer. I was like: Isn't there a way to make these open source again? So I went on Google and got here. Decided to order some wires, a JTAG pin block, a CP2104 and here we are. Last weekend I finally made the attempt to solder the JTAG block on. Seems easy, but I think I had my soldering iron a bit to cold, because I needed a few attempts at it in order for it to work. The solders seemed nice, but somehow I didn't get a connection via the CP2104. Tried a different CP2104, and that also did not work, until I finally got some results while reading the device, but the characters were not readable. So I got my multimeter out, and checked my connections, only to find out the solder for the GND was not great. It made contact, but not great. So, bumped up the temps on the soldering iron and went over everything again, and then it finally worked It was kinda rewarding to see the logfiles scroll through my debugger screen. It's also pretty responsive. Quite surprised! So, now with the connection fixed, I went and flash the stable release with the configuration using bitaxetool. And it worked. Did some testing. Let it mine for a bit. Checked the temps, everything was fine.

Then I saw that there is a new version on Github, which is: v2.6.6b1-1.0.6. Flashed that, and that also seemed to work. The only problem was, that the temps went up on the ASIC pretty fast. That is when I saw that the fanspeed was pretty low. Around 900 to 1000 RPM on automatic. And it does not ramp up when the temps increase. So i quickly set the fanspeed manually to 80% and that is fine. ASIC temps are now around 59 degrees celcius.

Is this a known issue with this version?

I got to say, I removed the original fans, and put on a 3D printed fan shroud, to fit a 140mm fan on the back of the case (To have airflow to the PSU too). But that worked well with the other firmware. So it seems like it's an issue with version v2.6.6b1-1.0.6 for me. For now I will keep the fan speed on manual @ 80%. But it would be nice if I could use the automatic fan control again. The fan I use is this one: https://www.bequiet.com/en/casefans/3706 - This is a great upgrade If anyone wants to use it, make sure that you have airflow to the PSU and set the fan to UHS (ultra high speed) because otherwise it will be quiet for sure, but it won't flow enough, so it won't cool the device down enough.

Oh i also removed the heatsinks, and removed the stock thermal paste. Put on ThermalGrizzly Kryonaut. That didn't lower the temps much, maybe 1 degrees celcius, if anyone was wondering. But I think it will be better for the long run, because the stock thermal paste is kinda meh. Also put some thermal pads on those silver blocks, near the VRM's? Is that correct? Those didn't make any contact with the stock heatsink.

Anyway, thanks for everything! Feels good to have this thing open source again.

Yeah, it's great to have it open source again—it means we can access the latest and greatest firmware

Starting from version v2.6.6b1-1.0.6, the method for automatic fan control was updated to use PID feedback based on the ASIC chip temperature. As a result, it may take some time for the fan speed to stabilize. v2.7.0b1-1.0.6 seem to have some tweaks to the polling rate, that might have fix the slow ramp.