[Solved] here are the steps to take:

Go into the Frontier repo

Fix the Substrate version to what you need: like polkadot-v0.9.24

Then build it and run it:

cargo build --release
./target/release/frontier-template-node --dev

That runs a chain based on Substrate Node Template. The hidden port is actually 9933, so here is the correct URL to connect your Ethereum tools to the running chain:

      url: "http://127.0.0.1:9933",
      chainId: 42,

I have no idea why the chainId was set to 42, which is the same chainId of the Ethereum Kovan network.

So you can change the chainId here: template/runtime/src/lib.rs

To clarify when to use the Frontier's template folder:

• If you have another repo that uses Frontier as a dependency, then use Option 1 above with Josh's video.
• If you want to run Ethereum smart contracts inside a substrate based chain with minimum effort, use Option 2 above and my steps above.

[Solved] here are the steps to take:

Go into the Frontier repo

Fix the Substrate version to what you need: like polkadot-v0.9.24

Open this file repo/template/runtime/src/lib.rs

Change your default chainId from 42 to something else, for example 1942. Because 42 is also the Kovan's chainId. I have no idea why the chainId was set to 42.

Then build it and run it:

cargo build --release
./target/release/frontier-template-node --dev

That runs a chain based on Substrate Node Template.

The hidden port is actually 9933, so here is the correct URL to connect your MetaMask, Hardhat, Remix to the running chain.

      url: "http://127.0.0.1:9933",
      chainId: 42,

Setup your Polkadot UI

Open Polkadot UI in your browser at https://polkadot.js.org/apps/#?rpc=ws://127.0.0.1:9944

Copy the polkadot UI setting at https://github.com/paritytech/frontier/tree/master/template

Go to Polkadot UI > Settings > Developer tab: Paste the copied setting

To clarify when to use the Frontier's template folder:

• If you have another repo that uses Frontier as a dependency, then use Option 1 above with Josh's video.
• If you want to run Ethereum smart contracts inside a substrate based chain with minimum effort, use Option 2 above and my steps above.

[Solved] here are the steps to take:

Go into the Frontier repo

Fix the Substrate version to what you need: like polkadot-v0.9.24

Then build it and run it:

cargo build --release
./target/release/frontier-template-node --dev

That runs a chain based on Substrate Node Template. The hidden port is actually 9933, so here is the correct URL to connect your Ethereum tools to the running chain:

      url: "http://127.0.0.1:9933",
      chainId: 42,

I have no idea why the chainId was set to 42, which is the same chainId of the Ethereum Kovan network.

So you can change the chainId here: template/runtime/src/lib.rs

[Solved] here are the steps to take:

Go into the Frontier repo

Fix the Substrate version to what you need: like polkadot-v0.9.24

Then build it and run it:

cargo build --release
./target/release/frontier-template-node --dev

That runs a chain based on Substrate Node Template. The hidden port is actually 9933, so here is the correct URL to connect your Ethereum tools to the running chain:

      url: "http://127.0.0.1:9933",
      chainId: 42,

I have no idea why the chainId was set to 42, which is the same chainId of the Ethereum Kovan network.

So you can change the chainId here: template/runtime/src/lib.rs

To clarify when to use the Frontier's template folder:

• If you have another repo that uses Frontier as a dependency, then use Option 1 above with Josh's video.
• If you want to run Ethereum smart contracts inside a substrate based chain with minimum effort, use Option 2 above and my steps above.