Quote from: nodc3 on August 01, 2025, 09:33:14 AM

Tried my seed frase on iancoleman.io, it shows "invalid mnemonic".
Looks like its a native Etherium seed frase. That means the only option is - I used an extended seed frase? Because you cannot mess with derivation path, when creating a seed in Electrum. Or am I wrong?

If you entered your mnemonic recovery words on the online version of https://iancoleman.io/bip39/, then consider your recovery words as compromised and you shouldn't use it anymore once you managed to recover your funds.

If you use a native Electrum wallet, you usually have no choice to change the derivation path at all. Electrum uses fixed preset derivation paths and doesn't give you a choice at creation or restore.

Quote from: nodc3 on Today at 08:20:11 AM

Any commonly used ones, that give bc1q adresses, that I missed?

Many of your tried derivation paths aren't common at all and you don't seem to understand the difference between hardened and non-hardened paths. I would suggest to learn a bit about HD wallets and derivation paths here: https://learnmeabitcoin.com/technical/keys/hd-wallets/

When you create and restore a native Electrum wallet from Electrum mnemonic recovery words, you're not offered a choice for a derivation path. Electrum uses m/0h (same as m/0') on the account extended key level for single-signer native Segwit address type wallets.

Individual receive addresses have full derivation paths:
m/0h/0/0 — first
m/0h/0/1 — second
m/0h/0/2 — third
...

Individual change addresses have full derivation paths:
m/0h/1/0 — first
m/0h/1/1 — second
m/0h/1/2 — third
...

The settings in Electrum generate per default a native Segwit address, e.g. for a BIP39 wallet defined by user's choice of radio button in Choose the type of addresses in your wallet. in the "Script type and Derivation path" dialog.

You can have native Segwit address type and an arbitrary derivation path, but users are warned to not change the default (for reasons!). If you change something here and you don't document it for your wallet, this is a good recipe for later desaster (as we likely have here in your case).

You were once able to restore your funded wallet properly. Why haven't you documented all the steps of restauration, if you're not too familiar with all the technicalities? I've also no idea why you constantly de-install Electrum and delete your wallet file without keeping backups of your wallet file (it should be secured by a strong wallet encryption passphrase anyway). Any good reasons for this?

Yes, I know that you don't really need a backup of your wallet file, when you have 100% working, documented and verified wallet restoration details. But apparently you don't have that, you changed something foolishly.

BTW, did you download Electrum solely from https://www.electrum.org/#download and verified your download is genuine?

Yes, it's true, if you switch to BIP39 mnemonic recovery words and your BIP39 checksum doesn't match, Electrum still allows you to proceed and get to the next step of "Script type and Derivation path" dialog. But I'd say, why proceed with a failed BIP39 checksum? Messing with this and a non-default changed derivation path AND not documented, is fool's territory.
It's not my intend to attack you specifically, I just feel the urge to highlight that it's very dangerous to make non-standard changes AND fail to document all the necessary details and steps taken.

Quote from: nodc3 on Today at 08:20:11 AM

Any suggestions on a good trustworthy firm, that can help me, if I fail to recover it? Lets just say I had more than one BTC there Sad

Choose your professional help wisely. Red flags are usually services that charge you upfront.

I had no business case with Dave, but my perception of his services is so that I do recommend to get in touch with him.
See old thread Bitcoin Wallet Recovery Services - for forgotten wallet password and don't be thrown off by initial negative comments. It's a natural reflex of many users to dismiss even totally legit and honest services as scams. Reputation has to be earned!

Pay close attention to proper spelling of his website, because there're fraudsters who exploit typos, especially when you use ...service.com instead of ...services.com!

Dave charges you only on success which is usually a good sign. My perception of his business is that he will assess your case and will honestly tell you if he's in or not. He has more than a decade of experience and likely pretty powerful gear for cracking.

In any case: DYOR! You don't have any reason to trust my judgement.

Your main problem is that you've changed something which you haven't documented and this needs a very structured and methodical approach.

An additional question that popped up for me: have you re-used your receive address, i.e. do you see your smaller transfer AND your later larger transfer in just one address?

Quote from: nodc3 on Today at 08:20:11 AM

And can a moderator move this theme to Electrum section? Hopefully I'll get some more advice there.

You can do that yourself, at least on the desktop. Not sure, if you're using a mobile to post here.