Hi all,

Thanks for all your help, but I was able to figure it out.

Here's what I did in case anyone has the same problem:

1. Used someone's Windows computer
2. Loaded up Electrum on there - same version 3.3.8 - with Electrum + Ledger wallet files
3. Ran Electrum as administrator (may or may not have helped)
4. Signed transactions from Electrum wallet file
5. Before signing + broadcasting with Ledger (via Electrum), I did this:


Personally I changed the DEVICE_ID to (0x2c97, 0x1011) after (0x2c97, 0x1015) didn't work because:


(Credit to this person who helped someone with an Electrum Ravencoin issue:
https://www.reddit.com/r/Ravencoin/comments/k473eb/ledger_electrumrvn_338rvn3_wont_detect_device/gnai1oi/)

6. After making the above change to the ledger.py file in the Electrum program files, Electrum detected the Ledger, and I was able to sign transactions and broadcast them!

7. I had to wait a bit for the transactions to sign + confirm (I think because I had a lot of inputs), but damn it finally worked

Again, thanks to everyone for their help. And I hope no one has to go through this

What I thought would be a nice HODL ended up being very stressful.

I think the lesson is to not overcomplicate things if you aren't a pro

"I would try creating a brand new Electrum wallet using your two hardware devices and your Electrum seed phrase, and without importing any master public keys/xpubs/ypubs/zpubs. This should create a new 2-of-3 multi-sig wallet which shows your coins, and which you can spend from. This is safe enough to do on your current computer since you are still protected by your hardware wallets. If doing this generates a different wallet with different addresses than your funded 2-of-3 multi-sig, then we have other issues to address before addressing any errors you are experiencing."

Unfortunately don't see any balance when I do this
(when I create a new Electrum 2/3 multi-sig using my Electrum seed phrase and public keys from hardware wallets, I see my coins though)

"How long ago did you set up this multi-sig wallet? Do you remember how you did it? Have you reset either of the hardware wallets since you did it? Have you ever used a passphrase/13th word/25th word/seed extension?"

I believe in early 2019

I did it following this guide
https://medium.com/@tiero/how-to-bitcoin-multi-signature-wallet-using-electrum-and-several-ledger-nano-s-225867e3b726

I am pretty sure I did the following:

Create 2/3 multi-sig wallet in Electrum
#1 = Electrum (the app)
#2 = import cosigner key from Ledger
#3 = import cosigner key from Trezor

If by resetting hardware wallets, you mean changing the seed, no I did not

"Have you ever used a passphrase/13th word/25th word/seed extension?"
Is this adding a password/extra word when entering your seed somewhere? If so, I didn't use anything like that

I think I have a cheap never used phone before, so will give this a try

So I have different Electrum wallet files for the Electrum multi-sig, Trezor, and Ledger.

It's only when I open the Electrum multi-sig file that I see my balance that I want to access.

When I open ex) the Trezor file, I don't see any balance

So when I open the hardware wallet with Electrum, it doesn't show the coins I have in the non-hardware Electrum wallet

For example, let's say I have 1 BTC in the non-hardware wallet.

When I open the hardware wallet, that 1 BTC doesn't show, and I don't think I can make a txn with 1 BTC from the non-hardware wallet?

Not sure if that makes sense

macOS Big Sur 11.6

And yes Nano S works well with Ledger Live


Yep updated all firmware


Not sure and yes but I setup the wallet years ago. I think due to the various changes that have happened since then with Electrum/Trezor/Ledger, things are breaking


No inputs are empty

And firmware on both hardware wallets is up to date


Yes the Ledger Nano S works correctly with Ledger Live

Also, I don't have Ledger Live open when running Electrum


This didn't work
(Though I don't know how to do the part "create the transaction with the hardware wallet" - if you can let me know/link to a good guide on how to do that, I can give it a try)


I tried opening just the Ledger wallet, and it still couldn't find the device

---

Thank you everyone for your responses so far...

I'm going to contact Ledger and Trezor support now (and post on their Reddits).

Also, I will try o_e_l_e_o 's method, but need to buy a new computer first.
(I've been meaning to buy a new one, but I guess this sped up my decision  )

However, If I buy a new computer/laptop, create a brand new 2-of-3 multi-sig wallet in Electrum, import the three seed phrases, and then sign a transaction from that single wallet, would it be ok to use that computer later on as my main computer (with Internet access)?

Or should I buy a new computer/laptop specifically to fix this wallet issue and never connect it to the Internet afterwards?

Thank you all!

Hi there,

I have some BTC stuck in an Electrum multi-sig that I setup a couple of years ago.

The wallet is set up as a 2/3 multi-sig wallet, with #1 being Electrum, #2 being Trezor One, and #3 being Ledger Nano S.

When I try to sign a transaction with Electrum (and then sign + broadcast with Ledger Nano S), it won't work because Electrum won't detect the Ledger Nano S.

When I try to sign a transaction with Electrum (and then sign + broadcast with Trezor One), it won't work because of the error "DataError: Expected input with amount".

I am on Mac and using Electrum 3.3.8.

(I tried updating to the most recent Electrum version, and it didn't work either. I think that's because according to the release notes, after 3.3.8 something changed with the Electrum partial transaction format - which I'm guessing applies to multi-sig transactions).

^ Release notes (see under Release 4.0.1 - (July 3, 2020): https://github.com/spesmilo/electrum/blob/master/RELEASE-NOTES

Please let me know if there's any other information I could provide to fix this. I would be forever grateful to whoever can help.

Also, as mentioned, I'm willing to pay $1k of BTC to whoever can help me fix this issue

Thank you!