Use a reliable Lightning-to-USB cable to connect your iPhone SE to the computer. Step-by-Step: Entering DFU Mode on iPhone SE (2016)
Your iPhone SE should now be in DFU mode. iTunes or Finder should detect that your iPhone is in recovery mode and prompt you to restore it. mode dfu iphone se 2016
DFU mode is the extreme unction for this stubborn machine. When iOS 15 slowed to a crawl, when a jailbreak tweak corrupted the kernel, when a forgotten passcode turned the device into a locked drawer of photos from 2018—DFU is the only way back. It bypasses the standard recovery screen. It reaches deeper into the silicon soul and whispers: Restore. Use a reliable Lightning-to-USB cable to connect your