NVIDIA's Isaac GR00T N1.5 is an advanced platform designed for the development of intelligent, adaptable robots, offering a major update to the original GR00T N1 model, which is the first open foundation model for humanoid robot reasoning. This model processes multimodal inputs such as language and images to perform tasks across various environments and can be fine-tuned for specific applications using the LeRobot SO-101 arm, thanks to its EmbodimentTag system. The blog details a step-by-step guide for post-training GR00T N1.5 with teleoperation data, including installation, dataset preparation, model fine-tuning, evaluation, and deployment on a physical robot. The process allows developers to customize robotic capabilities according to their hardware, enhancing humanoid reasoning and manipulation skills. The article also encourages community participation in leveraging these resources and contributing datasets, with ongoing discussions and feedback from users highlighting practical challenges and solutions in implementing the system.