Initial Device Setup

1. System Initialization 
The first step is to plug your Lattice1 to the wall socket. 
Please note that if you're outside the US, Canada or Japan, you will need to use a plug adapter as the power supply is a standard Type A (but support voltage ranges from 100V to 240V, so with an adapter, you're good anywhere in the world).
You will see a Starting up screen with the GridPlus logo on it and then, the system will initialize. This can take a few minutes.
Very rarely you can encounter a System Not Loaded message telling you to wait a minute and retry - simply tap on the Retry button to do exactly that and everything will be ok.
When the system initialization is finished, you will see the welcome screen with all the steps you need to take to start using your Lattice1 listed. Click on Setup.
2. Connecting to WiFi
The first step of the device setup is connecting your Lattice1 to the internet - you will be prompted to choose WiFi as a primary way of connecting, but you can click on Skip and connect via Ethernet. There is no difference in security, the only difference is the cable on your desk.
If you want to connect via WiFi, tap on Yes and wait for the device to look for available WiFi networks. Once the list is loaded, select your WiFi and type in your password. The device will take some time to connect and when it's done, you're good to move on to the next step.
The Lattice1's WiFi module supports 2.4 GHz only, along with the most commonly used encryption types. If you're having any problems with WiFi whatsoever (you can't see your network or you cannot connect to it), please check Lattice1 WiFi Troubleshooting.
Advanced users can also turn their WiFi radio off completely via SSH if they wish to use their Lattices with Ethernet only.
3. Device PIN Setup
The next step is to create a system PIN which you will use to unlock your Lattice1. Enter a 4-6 digit PIN and confirm it in the next step.
Make sure to remember this PIN! Brute force attacks are prevented by a countdown timer that starts at 1 minute after 3 incorrect unlock attempts and doubles with every incorrect attempts afterwards. It's impossible to try to unlock the device while the timer is active.
The Device PIN can be changed later if you wish to.
4. Lattice Wallet Setup
Once you have a PIN, tap on Let's go to set up a wallet. You now have three options:
1.Generate Wallet
2.Restore from Seed Phrase
As a first time user, you will most likely not have a SafeCard with a wallet on it, but if you want to restore from a SafeCard down the line, please generate a new wallet on this step first, you can then restore from the card when you insert it, unlock it and go to Manage Wallets.
So, which option is best for you? Read carefully and decide for yourself:
From a security standpoint, there's a very simple general rule that everyone should follow: your wallet is as safe as the least safe app it's ever been on. 
If you're upgrading to the Lattice1 from another hardware wallet, you can safely import your cold wallet via the seed phrase, as long as the wallet was originally created on hardware.
If you currently use a hot wallet such as MetaMask or Exodus and the Lattice1 is your first hardware wallet, the safest approach is to generate a new wallet on the Lattice1 and then transfer all of your funds and assets over to it. 
That being said, the chance that your former hot wallet will be hacked if you import it to the Lattice1 is very slim. Even though creating a new wallet on hardware eliminates the possibility of this entirely, if you were not hacked until now, you will most likely not be hacked in the future.
The final decision is yours - people who want the best security will opt for option 1, people for whom transferring all their assets would be too costly (e.g. NFT collectors) will opt for option 2.
4a. Generating a new wallet
If you decided to create a new wallet completely, tap on Generate Wallet and you will then have the possibility of creating a passphrase.
The passphrase is optional, but note that this is NOT a password, it's an additional 25th word of the seed phrase from which addresses are derived - so make sure to note this down if you want to create it! 
If you lose the passphrase, you will lose access to your wallet.
You can skip the passphrase by hitting ENT.
Now you will see your seed phrase (the 24 words) - if you won't be backing up your wallet to a SafeCard, make sure to note them down! Tap on Continue, and the wallet will be set up. You can skip step 4b. because you have a wallet now.
This is the ONLY time you can see your seed phrase on the device screen. There is no way to view this after the wallet is set up, make sure to WRITE IT DOWN or back it up!
4b. Restoring from Seed Phrase
If you wish to import your current wallet, select this option. You can import any 12/18/24 word seed phrase. Enter your seed phrase word by word on the screen and you're done.
5. SafeCard Backup
The last step of initial device setup is backing up your wallet to a SafeCard (if you didn't buy an extra pack of cards, use the one you received in your package) - this step is optional, but we suggest you still setup the card to see how it all works! 
So, click on Start and let's go:
1.Insert your SafeCard into the Lattice1.
2.Setup a new 6 digit SafeCard PIN.
3.Tap on Yes to proceed with the wallet backup.
This will take a few moments and once it's done, the device will prompt you to remove the SafeCard. The SafeCard chip now holds the same wallet you have on your Lattice1.
The SafeCard will be bricked after three incorrent unlock attempts - the PIN can be changed when the card is inserted in the device, but make sure to remember it!
You can read more about SafeCard security here.
6. Anti-tamper Security Mesh
The security mesh is a unique security feature that protects the wallet from physical attacks. When the mesh is active, any intrusion attempt that would aim to take the device apart and access the secure chip that holds sensitive information will trigger the mesh, which will then erase all data (including your wallet). It's basically a kill switch. You can read more about the mesh here.
WE HIGHLY RECOMMEND ARMING THE SECURITY MESH!

You can always turn it off in device settings when you don't need it for the moment. 
The mesh can be the last barrier between an attacker and all your crypto.
You should also have multiple backups of your wallet in case the mesh is triggered and wipes your wallet clean. 
If you decide to arm the mesh, you will have to reboot your Lattice. You can also see the current status of the anti-tamper security mesh in the top left corner of your Lattice screen. 
You can arm and disarm the mesh in Settings→Advanced→Configure Security Mesh.
You're now finished with the initial device setup, good job! 
Now it's time to learn how to connect to and use your Lattice with MetaMask ↓

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Outline

1. System Initialization

2. Connecting to WiFi

3. Device PIN Setup

4. Lattice Wallet Setup

5. SafeCard Backup

6. Anti-tamper Security Mesh