Thanks for prompt reply, Cereberus.

I tried that guide before posting (a bit old, different software version now), but It doesn't work with passphrases. I couldn't find the option to put the passphrase, and of course, It doesn't rebuild the wallet. Does anyone succeeded in recovering Trezor with passphrase using Electrum/Mycelium?

Moreover, you cannot bypass the passphrase, as you can read in their FAQ (https://doc.satoshilabs.com/trezor-user/advanced_settings.html#multi-passphrase-encryption-hidden-wallets)

        The flip side to this extreme level of security is that if you forget your passphrase your bitcoins are lost. Really lost!