A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header

[verissimoster]

Whenever I try to flash the FW I always get the error:

Uploading .pio\build\mkstinybee\firmware.bin esptool.py v3.0 Serial port COM5 Connecting........____..............................

A fatal error occurred: Failed to connect to ESP32: Timed out waiting for packet header *** [upload] Error 2 ======================================================= [FAILED] Took 274.93 seconds =======================================================

Environment Status Duration

---

mks_tinybee FAILED 00:04:34.931

I saw the Topic "USB Doesn't work", but come on I bought a fully functional board and now I'm the one who needs to repair it?! Waiting for feedback from your customer support

[DrainIT]

I had the same problem. In the opposite corner to the heaters cable and the stepper drivers -near the thermistor sensors cables- there is a button . Just start uploading, push the button and DON'T release it until the "connecting" prompt appears, that should be similar in every uploading program you're using - i was using VS code. If it doesn't work, try pressing it for 5 seconds - it should flash red, meaning it's ready for the uploading. I hope that helped.

[jirka-malvin]

are you using Mac? if yes, do you have driver for ESP installed?

[verissimoster]

hello guys, tks for your help, I solve the problem by changing the computer, fortunately I do have another one at home, and worked just fine.

[Rmdhn1]

have this issue, used to work, don't know why it's suddenly like this

[Rmdhn1]

UPDATE : Accidentally plugged in to USB 2.0, MUST USE 3.0

[ntsub]

I have still the same problem, uploading on a 3.0 USB with a relatibe short USB cable. any other idea?

[ntsub]

SD CART uploading firware.bin does neither work... :( Totally lost

[guigur]

got the error on my macbook but it works on my windows desktop