recovery info

README.md

@@ -309,6 +309,49 @@ We know that this is not optimal yet. But until version 1.0 we will change too m
 
 From the upcomming version 1.0 onwards the goal is to make it easier to keep up with the lastest RaspiBlitz updates.
 
+## Recover your Coins from a failing Blitz
+
+You might run into a situation where your hardware fails or the software starts to act buggy. So you decide to setup a fresh RaspiBlitz, like in the chapter above "Update to a new SD Card Release" - but the closing channels and cashing out is not working anymore. So whats about the funds you already have on your failing setup?
+
+There is not a perfect way yet to backup/recover your coins, but you can try the following to make the best out of the situation:
+
+### 1) Recover from Wallet Seed
+
+Remember those 24 words you were writing down during the setup? Thats your "cipher seed" - now this words are important to recover your wallet. If you dont have them anymore: skip this chapter and read option 2. If you still have the cypher seed: good, but read the following carefully:
+
+With the cypher seed you can recover the bitcoin wallet that LND was managing for you - but it does not contain all the details about the channels you have open - its just the key to your funding wallet. If you were able to close all channels or never opened any channels, then everything is OK and you can go on. If you had open channels with funds in there, the following is to consider:
+
+* You now rely on your channel counter parts to force close the channel at one point. If they do, the coins will be available to use in your funding wallet again at one point in the future - after force close delay.
+* If your channel counter parts never force close the channel (because they are offline too) your channel funds can be frozen forever.
+
+So going this way there is a small risk, that you will not recover your funds. But normally if your channel counter parts are still online, see that you will not come back online and they have themselves some funds on their channel side with you: They have an incentive to force close the channel to make use of their funds again.
+
+So here is what todo if you want to "Recover from Wallet Seed" with RaspiBlitz:
+
+- SetUp a fresh RaspiBlitz (fresh SD-Card image and clean HDD).
+- During the new SetUp you get to the point of creating the LND wallet (see image below).
+- When you get asked "do you have an existing cypher wallet" answere `y` this time.
+- Follow the dialog and enter the cypher seed.
+- If you get asked at the end for the password D to encrypt your cypher seed, use the same as the last time. If you havent entered one last time, just press Enter again.
+
+![SSH8](pictures/ssh8-wallet.png)
+
+Then give LND some time to rescan the blockchain. In the end you will have restored your funding wallet. You maybe need to wait for your old channel counter parts to force close the old channels until you see the coins back displayed.
+
+### 2) LND Channel State Backup
+
+This second option is very very risky and can lead to complete loss of funds. And it olny can work, if you can still access the HDD content of your failing RaspiBlitz. It should only be used if you lost your cypher seed for the option above, forgot your cypher seed encryption password or your old channel counter parts are offline, too.
+
+What you do is in priciple:
+- Make a copy of the HDD directory "/mnt/hdd/lnd"
+- Setup a fresh RaspiBlitz
+- Stop LND
+- Replace the new "/mnt/hdd/lnd" with your backuped version
+- 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.
+
+
 ## Mobile Development: Connect RaspiBlitz without a Router/Switch
 
 To connect a RaspiBlitz directly (without a router/switch) to your laptop and share the WIFI internet connection, you can follow this [guide for OSX](https://medium.com/@tzhenghao/how-to-ssh-into-your-raspberry-pi-with-a-mac-and-ethernet-cable-636a197d055). In short: