Can you summarize the main points about the glory of Udi from Chapter 33 of the Sai Satcharitra?

Certainly. Chapter 33 of the Shri Sai Satcharita is dedicated to explaining the glory of Udi. The chapter begins by describing Sai Baba's method of creating it: by burning logs in the sacred Dhuni. It then outlines the practice of distribution, noting that Baba gave it to devotees throughout the day and especially as a sign of permission to leave Shirdi. The core of the chapter, however, explores its profound significance. The Udi teaches that the physical world and the body are impermanent and will eventually turn to ash. This is intended to foster a sense of detachment. As this chapter explains, the Udi is a physical symbol representing the ultimate truth that only Brahman is real and the cosmos is an illusion (Maya), a lesson Baba wished for his devotees to remember always.