Get Started

For support in English, ask for help on the Omega Discord.

Before starting this guide, we will check the model and the current Epsilon version of your device.

Section I - Model check

  1. Turn your calculator around
  2. On its back, there should be a little writing, either N0120, N0110 or N0100. This is your model number.
  3. If you can’t read that:
    1. Turn the calculator on
    2. Go in the settings app
    3. Go in “about”
    4. Look at the FCC ID. It should end with N0110 or N0100

If you have a N0100, STOP - your calculator is already unlocked! Continue from here.

If you have a N0120, STOP - nothing here will work for you!

Section II - Epsilon Version check

  1. Power on your device
  2. Go in the settings app
  3. Go in “about”
  4. Look at the “Software version” or “Epsilon version” field.
  5. This is your Epsilon version.

Section III - Flash lock check

  1. Press the “6” key
  2. While pressing the “6” key, press the reset button at the back of the device.

If you see a screen like this one, you can proceed : Epsilon 16 bootloader

If the screen stays black and the LED turns red, STOP - your calculator is already unlocked! Continue from here.

Press the reset button at the back of the calculator to return to the firmware.

Section IV - Select a Method

Use the version table below to select a method. A few things to note:

  • The version table below is inclusive. For example, “from 16.3.0 to 18.0.0” includes 16.3.0, 18.0.0, and all versions in between.
  • Version 16.4.3 does not follow this rule.
System Version What to do
18.2.3 Downgrade to 18.2.0
16.4.3 Upgrade to 18.2.0
16.3.0-18.2.0 Phi
11.2.0-16.2.0 Now what ?

Alternate Methods

If possible, you should follow one of the software methods listed above.

Otherwise, methods that work on all versions are available, but require additional hardware:

  1. Debug port - requires a Raspberry PI or a STLink