Thanks for your reply. I start so from here?

Quote from: DireWolfM14 on Today at 11:13:21 PM

Electrum may connect to the Ledger without a firmware update, it's worth trying it first. If you have any trouble connecting, then you'll need to use Ledger Live to update the firmware.

Quote from: DireWolfM14 on Today at 11:13:21 PM

You may be able to pull the hard drive from your old PC and extract the wallet file, if you feel it's worth the trouble. Of course you can use the Ledger to create a new Electrum wallet file, but any labels you applied to addresses or transactions will be lost, and any frozen coins or addresses will no longer be locked.

I have no frozen coins or adresses. I used it only once: initialized ledger, created an electrum wallet, created an address, sent satoshi; and never touched it again so far.

Quote from: bitmover on Today at 10:50:31 PM

Download electrum new version here:

https://electrum.org/#download

Follow these steps to connect ledger and electrum
https://support.ledger.com/hc/en-us/articles/115005161925-Set-up-and-use-Electrum

do i need anything specific compared to the old electrum wallet? do i reinstall the new version directly? does the old one get overwritten? do i need to save anything?

Quote from: bitmover on Today at 10:50:31 PM

Optional but recommended:

It is very likely that you will have to update your ledger nano firm were. Your device will most likely reset, as there is a long time you don't use it.

Only do this if you have the seed with you.

I have seed (from ledger)

Quote from: bitmover on Today at 10:50:31 PM

Download ledger live and update the firmware:

https://support.ledger.com/hc/en-us/articles/360002731113-Update-Ledger-Nano-S-firmware

So is it important in the future to continue to update ledger and electrum?

is there anything that can go wrong with the procedure? (yes I left everything there so as not to do something stupid)