So I tried first but it didn't work, it showed the message "recovery" but then got the same message that in my previous post. I then tried again, it showed the message "bootloader" and then it updated the firmware alone. I needed to reinstall the app as well. The wallet is back to what it was.
Thanks for the help guys
You're welcome, I'm glad you managed to solve the problem. Ledger is make firmware update from 1.3 to 1.4.1 fairly problematic for most users, but from 1.4.1 to 1.4.2 it was pretty easy and without complications. With latest firmware Ledger say that error with outdated/not genuine MCU is fixed, so in next update users should not have such problems.