- Replace the new `/mnt/hdd/lnd` with your backuped version
- Make sure everything in `/mnt/hdd/lnd` is owned by bitcoin:bitcoin
- Reboot the RaspiBlitz
This is highly experimental. And again: If you restore the LND with an backup that is not representing the latest channel state, this will trigger the lightning "penalty" mechanism - allowing your channel counter part to grab all the funds from a channel. Its a measure of last resort. But if its working for you, let us know.