Mayank Chhabra mayankchhabra

Keybase proof

I hereby claim:

I am mayankchhabra on github.
I am mayankchhabra (https://keybase.io/mayankchhabra) on keybase.
I have a public key ASBzfoYwFjR4X4exsjNRfsLsHhR2mEvGyulWWadW91kr9Ao

To claim this, I am signing this object:

After you’ve flashed Ubuntu 18.04 on your microSD card and plugged it into your Odroid H2 board, connect the SSD, ethernet and power supply to it. Turn it on and SSH into your system.

Step 1. Update packages

sudo apt-get update
sudo apt-get upgrade

Step 2. Change system’s hostname to “umbrel”

Off-chain recovery for Umbrel OS (Raspberry Pi installs)

Once you’ve restored from the 24 words, it might take a few minutes to a few hours for it to scan all of your previous Bitcoin (on-chain) transactions and balances. Meanwhile, here's how you can restore the funds in your Lightning channels.

Step 1. Copy over the channel backup file from your computer to your Umbrel.

Open the “Terminal” app on Mac/Linux, or “PowerShell” on Windows and run this:

Install Umbrel v0.3.5

sudo fallocate -l 4G /swapfile
sudo chmod 600 /swapfile
sudo swapon /swapfile
echo '/swapfile none swap sw 0 0' | sudo tee -a /etc/fstab
sudo sysctl vm.swappiness=10
echo 'vm.swappiness=10' | sudo tee -a /etc/sysctl.conf
sudo sysctl vm.vfs_cache_pressure=50

Step 1. SSH into your Umbrel

Open the “Terminal” app on Mac/Linux, or “PowerShell” on Windows and run this:

ssh [email protected]

It will prompt for a password, enter your Umbrel's password.

	#!/bin/bash
	# Ensure the script is run as root
	if [ "$EUID" -ne 0 ]
	then echo "Please run as root"
	exit
	fi

	echo "Current date is: $(date -R)"

	# Update packages