Enable Developer Mode

⚠️ Warning: Developer mode gives you root access. Be careful with terminal commands — you can break your device.

ℹ️ Nokia’s original repositories are dead, so enabling Developer Mode on a stock N9 fails out of the box. You need to install the N9 mirror first, then toggle Developer Mode.

Step 1: Allow non-store installations

On your N9:

1. Open Settings
2. Go to Applications → Installations
3. Enable Allow installations from non-Store sources

Step 2: Connect to the internet

Wi-Fi or 3G, doesn’t matter — just make sure you’re online.

Step 3: Install the mirror package

Open the browser on your N9 and go to:

n9.mpw.sh/setup.deb

Tap the file when it downloads, accept the prompts, and let it install. This adds the N9 mirror to your apt sources so Developer Mode can find the packages it needs.

Step 4: Enable Developer Mode

1. Go to Settings
2. Scroll down to Security
3. Tap Developer mode
4. Toggle it ON
5. Accept the terms and conditions

Your device will download and install Terminal, SDK Connection, and the other developer tools. This takes a few minutes.

Step 5: Access the terminal

Tap the Terminal icon in your applications menu.

Step 6: Gain root access

In the terminal:

devel-su
# password is rootme

Step 7: Set a good password for user

As root, run:

passwd user

output:

Changing password for user
Enter the new password (minimum of 5, maximum of 8 characters)
Please use a combination of upper and lower case letters and numbers.
New password:
Re-enter new password:
Password changed.

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Next: continue with Install Aegis Hack (required), before stalling apps from the package catalog.