Thank you, tried but didn't work. I guess I'll spend more time with it to try and find out the problem....

I did search and been spending hours looking for information, but all is related to BIOS, and not the usb-c Firmware, reason why I openned a new thread.
Thanks...

Hi all,

I have a Dell Latitude 5420 SN: 4DRQ4M3 in store, costumer indicates that It doesn't turn on, but led light blink when power button is pressed.
We already traced that is some kind of indicator that it doesn't receive power.
USB-C only does 5V on 1 port, and other it doesn't turn on the Ampmeter.
UZ12, UI1 and UT3 present elevated temperature. Already replaced all of them.
Now the board indicates 5V on both ports, but it doesn't convert to 20V.
I would like to try another USB-C firmware if anyone could upload.

Already ordered the...