SMS is not a good option for sending Bitcoin there is a thread recently that talks about SMS 2FA which I think is a bit related and in most of the responses there is SMS hijacking where SMS provider and selected staff can able to check or monitor your text messages or someone who physically have your sim card can able to make a sim clone which is not safe because both of you can able to receive a message or if it's bitcoin then both of you receive the same then the clone one can able to make a transaction send to the hacker's wallet.

It is likely a grin coin but the only difference is that you can't send it through SMS instead you can send a grin coin through a file or HTTP listener without internet.

Are you talking about altcoins?
Because I think you can't able to target less or lower network difficulty you can do that before but right now you can't most of the mining units right now are plug and play(Setup pool and account.)

Or are you talking about the network hashrate result on a given difficulty? You might need to read this link below

- https://en.bitcoin.it/wiki/Difficulty#What_network_hash_rate_results_in_a_given_difficulty.3F

Offordscott offers $3.8k s19j pro not brand new but used units he posted it recently on his telegram here https://t.me/asicEasternHemisphere
That's the only option if you want to buy Antminer units a bit cheap compared to buying directly in Bitmain.


And it seems most of the Canaan units are another option if you want cheap and brand new units.

There are many right now who produce ASIC chips but for Antminer I think they develop their own ASIC chips same goes for Canaan or Avalon units.
However, there are produced ASIC chips outside of these manufacturers most of the source is from China.

I don't think you can buy only ASIC chips directly from ASIC miner manufacturers before they do sell them but right now they don't sell them you can only buy them on 3rd parties like on zeusbtc.com.

I don't think if this is the hashboard issue you need to check and verify first if this is actually the hashboard issue.

Look at this logs


I noticed abnormal power on Chain[5] it might be a PSU issue, not the hashboard since you said earlier that there had been a power failure recently mostly affected are PSU.

What I would like you to do is try to swap PSU cables and ribbon cables of that hashboard then test them one by one to make sure if one hashboard is broken. If you don't know how to test them one by one check this link below.

- https://support.bitmain.com/hc/en-us/articles/226142788-Test-Hash-Board-one-by-one

Use the same model that you use before or you can replace it with this model: QFR1212GHE Delta this one is the compatible one.

Or you can try to check the wires it has 4 wires Black, Red, Yellow and Blue.

Legends:

black = ground
red = + 12V
yellow = PWN or Signal Speed
blue = PWM

Check the Blue wire since you said there is no return signal in PWM if this one doesn't have a connection the fan will always run at full speed so focus on that part the wire may not be connected or resoldered properly try to resolder or replace the blue wire and make sure it is connected in the right position to the control board when replugging.

Are you sure that it asks for an account ID?

It seems that restoring the 12 words seed backup does not need ID. Look at this guide below

- https://support.bitcoin.com/en/articles/3542814-restore-my-wallet

I'm not sure what you are doing when restoring your wallet from your PC to the app but what you only need is the backup seed phrase to restore your wallet.


If it did ask for KYC name and ID then I suggest you bring your backup to another wallet and try to import your 12 words seed like Electrum wallet and then let Electrum wallet find the right derivation path where your wallet with balance is located.

I'm confused a bit what do you mean by the hashboard change the power supply?

Did you mean that you already replace the PSU but the issue is still the same?

I suggest check carefully the unit there might be grounded that leads hashboard not showing the right ASIC.
Would you mind to try disassemble the unit and run them one by one then check for any changes in the logs or if one of the hashboard is running fine.

The whitepaper is still needed because all information you need is there before you invest in the project. Investors are always reading the whitepaper first to decide if the project is a scam or if it has a future to grow. All you need as an investor is already in the whitepaper. Just be careful on another whitepaper that looks legit and has the potential to grow but the whole thing is fake if it is plagiarized just like the other said above.

Are you talking about newly listed coins or token?
I have experienced before I usually investing in newly listed coins/token because it increase instantly and it die later. So I exchange them after gaining profit I don't hold them for long because I can buy later for a cheaper price.

Anyway, your problem is that you can't able to withdraw or transfer the token out from Zebpay? Also the rate seems not fair?

I search a bit it seems its a scam exchange look at this old thread below.
- https://bitcointalk.org/index.php?topic=4489462.0

I noticed that thing on different websites it seems Cloudflare change its design because I think the old one is a bit slow compared to this new design.

There is a topic about this on their Cloudflare forum here "The New Managed Challenge Page"

This is a different issue from the last time that preev is down it's related to domain expiration but right now it seems related to DNS expired.

Don't forget about Coingecko is one of the good options you can also use their Widget converter to install it in your Widget launcher in your PC.

Links here https://www.coingecko.com/en/coins/bitcoin and widget's here https://www.coingecko.com/en/widgets/coin_converter_widget

Is that the test jig from Bitmain? There might be a connection problem which is why it is stuck at sending PIC heartbeat or the USB test data cable is defective.

Try to check the terminals of the test fixture and clean them and then replug them all. Test again let's see for any changes.
If nothing changes maybe there is an issue on the hashboard related to the PIC program that needs to be reflashed.

I suggest you check them one by one chips that you see some errors if you don't know how to locate and test them there is a guide on ZeusBTC that will help troubleshoot and repair the whole  s17+ hashboard.

You can follow the guide from this link "Antminer s17 plus Hashboard Repair Guide" Or download the repair guide here https://www.zeusbtc.com/articles/information/182-antminer-s17-manual-download

It shouldn't be booted on the web if you did download the correct file image. I guess that you downloaded a web version where you can access BraiinsOS while the JP4 is moved/jumped to another side.
You should use the right image if you want to flash it into Nand.

Would you mind to try the firmware from this link https://feeds.braiins-os.org/20.09.1/ the one with the name s9 SD? 

You can just dump them before you replace/reflash them with a known working PIC file so that, you can revert it back to the original state if it is not working well.

Just make sure that you have a working s19j pro PIC file if you don't have an extra s19j pro then you maybe need to request with someone here on the forum who have the same unit.

No one here can able to help you with sending the wrong coin/token to your exchange account.
The exchange support is the only one that could help you with your token but according to the Kucoin article here https://www.kucoin.com/news/en-deposit-to-wrong-address
It is gone forever and they can't do anything.

Since you already contacted them and they said that they will recover your token once the token is already listed on their platform. Why not contact the developer of that token and try to request to add this token to Kucoin?

What exactly is the token are you talking about?

Check Canaan units it seems they are selling cheaper right now compared to Bitmain.
And also if you are a newbie at least read this sticky thread here "First time/Small miner reference for getting started"



Depending on so many things if you talking about the whole Bitcoin you won't be able to mine 1 BTC with a single miner you need 8PH/s to be able to mine 1 BTC every month.

I guess it's due to a weak signal or there are many people connected on the same Wifi, most of the wifi modem(If it was from an internet provider) only allows 3 devices.

So if you don't want to keep disconnected then a direct connection through an Ethernet cable is the best. Or maybe buying a router can improve your wifi connection in your house.

Take note ASIC units are power hungry compared to mining with GPU if you are planning to mine with ASIC you need to be prepared so I suggest you read this "First time/Small miner reference for getting started."



Mining with GPU is no longer profitable and it can no longer mine BTC maybe years ago it can still mine BTC SHA256 algo but right now GPU is no longer supported. Unless you talking about mining on Nicehash and paying you in BTC you are not mining directly with BTC you are paid due to hashrate rentals on Nicehash.