License Key Setup

Activating Your MeshOS Device

Your T-Deck, T-Pager or Elecrow M9 arrives in trial mode — basic chat works, but advanced features are locked behind the red padlocks. To activate everything, you'll need a MeshOS license.

Elecrow M9 Owners

How To Get Your Key

Every Elecrow M9 with MeshCore MeshOS bought from our store comes with a full MeshOS license in the price. You do not need to buy anything else. To get your key:

Find the 12-character serial on your M9 screen: tap any padlocked menu item, or open Settings > Activate
Email it to us together with your order number (it looks like MeshCore #9123 and is in your order confirmation email)
We reply with your personal 88-character key, normally within 24 hours. Enter it using any method in Step Three below

Email Us Your Serial

Already emailed your serial at checkout or afterwards? Check your inbox and spam folder, your key may already be waiting for you.

Bought your M9 directly from Elecrow and installed MeshOS yourself from our configurator? Those units do not include a license. Pick up a MeshOS MeshCore License (£8), enter your serial at checkout, and your key arrives by email. It covers the M9 just the same as the T-Deck and T-Pager.

Elecrow

M9 (included with our bundles)

LilyGo

T-Deck / T-Deck Plus

LilyGo

T-Pager

LilyGo

T-Display P4

Step One

Find Your Device's Serial Number

The serial is a 12-character hex string based on your device's MAC (e.g. 80B54ED55720). On every device (T-Deck, T-Pager and Elecrow M9) you'll find it on:

The on-device activate screen — tap any padlocked menu item
Settings Menu > Activate
The MeshOS app once connected over Bluetooth

Step Two

Buy a License

Bought your M9 from our store? Skip this step: your license is already included, so buying one here would be paying twice. Email us your serial instead and we will send your key. Bought your M9 directly from Elecrow? You are in the right place: the MeshOS MeshCore License below covers the M9 too.

Pick the license that matches your device:

MeshOS License (T-Deck / T-Pager / M9) — £8 T-Display P4 License — £8

After payment you'll receive an email containing your license key — an 88-character string that looks something like:

6VzmpmNz6R8ssdVAc7mQ2ondbmyumdE5KWlSMziNqMTc1ffAju9f2XpudnRi94RB
4cwbtsOwzS+S63TXH2naBw==

The key is tied to your specific device. Each T-Deck, T-Pager and M9 gets its own unique key.

Step Three

Enter the Key

Pick whichever method works best for you — they all do the same thing.

Recommended

MeshOS Activator

The fastest way — straight from your browser. No app install, no typing.

Plug your T-Deck or T-Pager into your computer with a USB cable
Open the MeshOS Activator in Chrome or Edge
Click Connect and choose your device from the browser picker
Paste your 88-character key and submit

Open MeshOS Activator

MeshOS App

The smoothest flow — works the same on T-Deck and T-Pager.

Install the MeshOS app — available on Android and iOS
Open the app and connect to your device over Bluetooth (default pin is: 123456)
Go to Settings → T-Deck → Activate T-Deck (the section is named after your device, so T-Pager and M9 owners will see their device's name instead):
Paste the 88-character key from your email and tap Activate Device:

Done. Your device is activated.

On-Device Entry

If you don't want to use the app.

On your device, tap any padlocked menu item (or Settings → Activate Device)
Tap ENTER KEY
Use the on-screen keypad and the physical keyboard to type the key. The trackball moves the cursor for fixing typos.
Tap SUBMIT

⚠ Watch out for similar-looking characters when typing manually: 0 (zero) vs O (capital o), 1 (one) vs l (lowercase L) vs I (capital i). Most "invalid key" errors are a single typo.

SD Card

For long keys this is fastest — and avoids any typing errors.

Save your key as a plain-text file called key.txt at the root of a microSD card (whitespace inside the file is ignored)
Insert the card into your T-Deck or T-Pager
Open the activate screen → tap ENTER KEY → tap SD
The key loads into the entry box; tap SUBMIT to activate

USB Serial

For developers and power users. Plug your device into a computer, open a serial terminal at 115200 baud, and run:

/license set <paste-your-88-char-key-here>

Or, if you have key.txt on the SD card:

/license sd

Show your current state any time:

/license show

Step Four

Verify It Worked

After activation:

Red padlocks across the menus disappear
Settings → Activate Device panel disappears in the app

You can also re-open the activate screen any time — when activated, it shows "Active key:" followed by the key currently stored on the device.

Step Five

Support

If your key won't activate, double-check:

The serial number on screen matches the one your key was issued for
No characters were transcribed wrong (paste rather than retype where you can)
You're entering the long signed key (88 chars), not an old short key

Stuck? Email [email protected] with your order number and the serial shown on the device.

Existing Customers

Legacy Short Keys

If you bought a license before the new system rolled out, your old 8-character key still works — your device remains activated, no action needed for day-to-day use.

However, if you ever erase the firmware, do a fresh install, or move to a brand-new firmware build, you'll need a new 88-character signed key to re-activate. The old short key won't work on the new system.

If that happens, just reach out to our support team with your original order number and your device's serial — we'll issue your new signed key free of charge.

Ready to Activate?

Grab a license, paste the key, and activate every feature on your T-Deck or T-Pager.

Bought your M9 from our store? Your license is already included. Email us your serial and we will send your key for free.

Get a License — £8 Learn More About MeshOS