wagyu-key-gen VS ethdo

Here's a link to the Key Gen described in the video: https://github.com/stake-house/wagyu-key-gen

From the official launchpad, one of the tools suggested is "Wagyu Key Gen". Takes you to a GitHub page where you can download it (https://github.com/stake-house/wagyu-key-gen/releases). A few scrolls down the page, under "Binaries" there is a download link to the .exe file (for Windows). The Windows version is an executable with a nice user interface that is easy to use.

You can verify if your mnemonic or your seed recovery phrase is working by generating your keys again with staking-deposit-cli or Wagyu Key Gen. If the resulting file(s) have the same public key(s) (pubkey field), everything should be good.

While it might be possible to generate your keys with a Ledger device, I would advice against doing it simply because it has more risks. Using eth2-deposit-cli or Wagyu Key Gen should be your main options. You could even reuse the same mnemonic as your Ledger device even if it has some cons like losing it means you potentially lose your wallet value and your validators.

Yes. You can find the github repository on https://github.com/stake-house/wagyu-key-gen

You can check the parameters you are sending to the Abyss contract and makes sure the withdrawal_credentials field contains your withdrawal address(es). Pick one of the successful transactions on the Abyss contract on etherscan and then click show more details. Then press the "Decode Input Data" button and you can see withdrawal_credentials details. So you can check these fields in Meta Mask (or your hardware signing wallet) to make sure this field is set with your correct withdrawal address(es). If you want to check the entire message is correct, then you can use a tool like ETHDo.

You should contact staked.us support. You cannot configure the derivation path with Wagyu Key Gen. It uses the default and most common derivation path. ethdo is a tool that can be used to use a custom derivation path. See https://github.com/wealdtech/ethdo/blob/master/docs/usage.md

ethdo still works fine for creating wallets.

No. ethdo can. See https://github.com/wealdtech/ethdo/blob/master/docs/usage.md

https://github.com/wealdtech/ethdo/blob/master/docs/changingwithdrawalcredentials.md here you go, ethdo is perfectly legit, but also very powerful tool, be careful and godspeed

It looks like the the 'Advanced Operation' of ethdo lets you change your validators' withdrawal credentials individually.