1. In 2018 he used the Ledger Chrome app to create a BTC and a LTC address to receive funds.
2. They sent him the funds, both LTC and BTC, blockchain explorers confirm that the funds are received and confirnmed.
3. He wants to use his funds and faces the problem that his Ledger apparently does not hold the private key for his BTC address but it does hold the private key for his LTC address.
4. Both addresses where generated within a few minutes of eachother and inbetween the seed did not change, the device was not wiped or anything, everything was normal.
From my personal experience with Ledger I can say that it is possible that the problematic BTC address may be a change address that your friend took from the Ledger Chrome app because then it was possible. In case the change address is deep enough outside the gap limit that Ledger checks, you will not be able to see the balances for that address. This happened to me and I was able to fix the thing with using Electrum and increasing the gap limit for change address.
I think it is worth trying to change the gap limit in the way described in this
post. It is important that the number of addresses can be changed to 100, 200 or a number of your choice - in my case, if I remember correctly, it was necessary to increase the gap limit by 150 to find the change address.
wallet.change_gap_limit(50)
It is extremely important that you be careful with Electrum. There are a lot of fake wallets, so always
verify the wallet file before installation.
Hi... thx. Already tried it with gap limit up to 1000 and no luck. It is clear to me the problem is outside of Ledger or Trezor, if you have some time, read the whole post.
This could be the starting point for alot of people finding their funds back.