### hw-app-btc: refinement of "trusted input for segwit" logic - make ledgerjs still able to sign transaction in old firmwares (Nano S <= 1.4.2) by handling error of non supported b0 01 00 00 call which we use to feature detect this ( context https://old.reddit.com/r/ledgerwallet/comments/hpgree/sending_bitcoin_error_with_ledger_0x6d00/ ) - Decred does not support this "trusted input for segwit" mode ( ctx https://twitter.com/21mxbt/status/1282458666919067650 )