Odin files vary in size, from enormous multi-gigabyte firmware files (the main operating system for an Android phone) to small updates to other necessary systems, like the bootloader or radio. Most of the time, you'll be using Odin to flash either a stock, unmodified software image or a slightly modified one that adds tools like root access . The new update can be identified by firmware version A035MUBS2CWE2. And as you can probably tell, if you know what the letters and numbers in Samsung's firmware mean, the update doesn't bring any new features or One UI changes. It's all about improving the security level. Samsung detailed the April 2023 security patch last month. 83nTg.