HTCC-AB02 - Stuck in bootloader

#1

Hi,

I have a HTCC-AB02 stuck in bootloader.

Serial output

Copyright @2019-2020 Heltec Automation.All rights reserved.

I have read a few post including CubeCell Module + Custom PCB + How to Access Bootloader

I get it into ‘bootloader Rev 1.0’ and then load the ‘Factory_Test_AB02’

image

Straight away it
image

I have changed USB ports and USB cable.

Any pointers will be appreciated.

#2

I had this
Broken LDO on the board
Power was supplied to the controller through the RX pin