Help request: upgrade failed, locked out at decryption passphrase

[tiikeri]

Thanks for your additional suggestion wibble, in the previous post I forgot to mention that I tried to mount and chroot throught jumpdrive via telnet, dd the rootfs distro by pc but no luck. I'm not familiar with chroot but I think it was what I did with my debian a couple of years ago in rescue mode.
Using a flashed SD card could be a good option again.
I would mark this thread as solved, at least we found out some ways to recover a broken system.
Cheers!