Guide

Flashing the Nokia N9

Reflash your Nokia N9 firmware using flasher 3.12 on Linux.

⚠️ Warning: Flashing wipes the device. Make sure your battery is at least 50% charged before starting — a flash interrupted by a dead battery is the only realistic way to brick the N9.

Step 1: Install flasher

Install the dependency first:

sudo apt install -y libusb-0.1-4

Then install flasher itself:

sudo dpkg -i ./flasher_3.12.1_amd64.deb

You can download the package here: flasher_3.12.1_amd64.deb.

Step 2: Connect the device

Power the N9 off. Hold volume-up while plugging the USB cable in, and keep holding until the device shows the USB icon.

Check that your computer sees it:

sudo flasher -i

You should see device info printed out. If you do, you’re good to flash.

Step 3: Flash the OS

To flash only the OS (keeps your user data on /home and MyDocs):

sudo flasher -f -F ./images/DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_001-OEM1-958_ARM.bin

File: DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_001-OEM1-958_ARM.bin

Step 4: Flash OS + eMMC (full wipe)

To fully wipe the device — OS, user data, MyDocs, everything — flash both images:

sudo flasher -f \
  -F ./images/DFL61_HARMATTAN_40.2012.21-3_PR_LEGACY_001-OEM1-958_ARM.bin \
  -F ./images/E7FEB593_DFL61_HARMATTAN_40.2012.13-7.UKIRELAND_EMMC_UKIRELAND.bin \
  --flash-only=mmc

Files:

The eMMC flash takes 5–10 minutes. The device will look idle. Do not unplug it. It reboots itself when done.

First boot after a full wipe sits on the Nokia logo for several minutes — that’s normal.

Next: Set up Developer Mode, or see the troubleshooting guide if something goes wrong.

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