Quote from: BlackHatCoiner on Today at 08:30:09 PM

Quote from: AndrRoos on Today at 07:29:56 PM

Everything is kind of written in the 1st post above. I tried to put many things & keep it simple at the same, to understand.

Well, from my reading, I say that it's not understandable enough. You've confused the whole situation with the given explanations. You can't have messed it up with Electrum, it's easy to use and I believe that even a newbie understands every part of the seed generation procedure. You probably made a mistake unrelated with Electrum you haven't mentioned, because you may not know it.

Quote from: AndrRoos on Today at 07:29:56 PM

I tried iancoleman.io - but of course it doesn't work with Electrum wallet, since Electrum does not support BIP39. Thus everytime an Electrum mnemonic phrase is typed in, it comes back with "invalid mnemonic".

You can actually import an electrum seed phrase in iancoleman as long as you want legacy addresses.

@BlackHatCoiner

thank you for this answer!

Yeah, I am quite certain that it is not understadable enough.

Messed up with Electrum? - what would I mess up?
1. I've just typed in the seed that was generated & recovered that "lost" wallet. Since there was still no conncetion to the servers...
2. I've updated the Electrum manager/user on Tails to newer version and then.....
3. Typed in the same seed again & guess what - I get entirely new wallet with entirely new addresses - even though using the same seed!
4. And ever since I get this wallet & never the 1st one with the funds

That's all, that's the whole story. - Didn't do any BIP39, any phrase extension, any derivation path, nor any other thing!
Just typed in the seed that I had in first place. - That's all.

Now, I assume - it has something to do with me generating the seed offline & on older version meaning it became kind of a cold wallet. Then deleted all the files, because it was recomended so on Tails website.
Then on Electrum website I found that it is necessary to update the wallet manually & so I did it & from that moment onwards it worked just fine! The Electum manager went online (once you are in the wallet) But......
Since I have deleted all the files from that "cold" wallet, used the exact same seed, as a result I'm getting a brand new wallet with brand new addresses & the one from before,,,, have never seen again.
That's all.

Now @anyone could help me here ahead

@BlackHatCoiner but thank you for that tip with source code. Can you downoad it on GitHub? I'm gonna check it out.