The reMarkable tablet is powered by reMarkable OS, a custom Linux distribution. Thanks to their allowing root access, you can add TRMNL to your tablet without removing core functionality.
Option 1 (Recommended)
Install the trmnl-remarkable project:
https://github.com/usetrmnl/trmnl-remarkable
Note: this may not work on your model, see the project's README for details.
Option 2
First, dd KOReader to reMarkable by enabling developer mode and following a guide to SSH into your device. Here are a couple options:
Next, install the TRMNL KOReader application:
If you need rotation support, see this code.
