Hi ESP_Sprite, Thanks for your response. Actually, I previously tried this a few times: > you can try holding the 'boot' button, then pressing and releasing the 'reset' button, then releasing the 'boot' button Even when I do this, the same behavior continues, i.e. > However, now it shows briefly as ...

Thanks for the reply @ESP_Xuxin! > Hello，Is your newly burned program occupying the USB pins, or is it constantly restarting? How could I figure this out? Here's what I can observe: * Shows up briefly (a second) in ESP Launchpad connect window, then disappears * Shows up briefly (a second) via lsusb...

Initially, the ESP32-S3-BOX-3B was turning on when connected to my Mac, and I was able to connect to it via esptool, flash it etc. However, now it shows briefly as a "USB/JTAG debug unit" (maybe for a second) and disappears - this happens on another mac, with other cables etc, so I'm pretty sure it'...