RuntimeError('DataError: Encountered invalid prevhash') when signing with Trezor One

[goodc0re]

Actual behavior

RuntimeError('DataError: Encountered invalid prevhash')
when signing a spending tx with Trezor One

Steps to reproduce

Electrum Firo 4.1.5.1
Trezor One latest fw 1.10.5
Spend multiple old utxos that were masternode payouts and sign with Trezor One

[DNS]

Probably related to this: #9
Also: https://firo.org/id/guide/common-problems.html

[goodc0re]

The solution on the linked guide suggests to "select a maximum of five inputs". I am getting errors trying to spend just single inputs. Right-click on one single utxo, spend .. and it will result in errors signing. I am freezing all those to remember which ones I can't spend.
There are some utxos I can send out as a single utxo, sometimes even 2 together, rarely 3, and some I can not send out at all.

I also have utxos that were not masternode payouts that I can not move even on their own. (See other github issues I logged.)

[DNS]

Seems the problem on the Trezor. Probably the hardware timed out early.

[goodc0re]

Now the question is, will this issue be fixed before the Lelantus utxos on Trezor become unspendable at block height 1223500 due to migration to Spark?

[justanwar]

@goodc0re I believe you are talking about Lelantus joinsplits to Trezor addresses? Those are still usable as inputs even after the migration window closes.

[justanwar]

@goodc0re What is the current version of your Trezor One? Is it still unspendable?

[goodc0re]

The masternode payouts have been spendable,

the only issues that remain unresolved at this time are #35 and #36