How to solve the problem of moving your funds when they are in an account that needs to be derived with a custom derivation path (dpath) using Trezor T.
If you made a BTC to R-BTC conversion using Trezor T, you need to access your account by using a custom dpath (
44'/0'/0'/0/0 for Mainnet). With the last firmware versions, Trezor T is checking that the dpath matches with the expected one as a safety feature and this is a blocker when you intend to use a different dpath.
You may also want to access your account with a different dpath if you made a mistake; for example, receiving RBTC at an address derived using the Ethereum dpath instead of the RSK dpath.
In MyCrypto or MyEtherWallet you may have received this message:
"Forbidden key path".
To allow custom derivation paths, you will need to turn off safety checks (see Pavol Rusnak message).
To do this, you need to install python-trezor:
pip3 install --upgrade setuptools pip3 install trezor
Once you are ready, run this command:
trezorctl set safety-checks prompt
(you need to have your Trezor T unlocked and accept the configuration in the device)
After moving your funds, you can turn them on again:
trezorctl set safety-checks strict
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