Long-term solution: route the nRST line to the SWD interface in the next revision of the board. After that, there was no need to connect the nRST anymore. Then flashed it with the FW version had SWD specified in the pinout view.

Method 2: How to hard reset on Samsung Galaxy Tab A 10.1 using hardware buttons If your case is that the phone is not booting up, or it boots but Settings menu is inaccessible, this method can be helpful. Short-term solution: brought the nRST signal from the programmer to the reset line using the external wire (in my case it was easy, since I had a physical reset button on my board). SeIect Factory data rset from the givn options. it wouldn't have mattered if the nRST line was routed to the SWD interface on my board.ioc file (the pinout and configuration view in STM32CubeIDE) the startup code (generated by the SDK and CubeIDE) disables the SWD interface almost immediately after the power-up UNLESS you specify that you're using SWD in the.Power off your phone > Hold for a while and press the power button and volume down till phone vibrates > Release the keys which let you enter into Download mode. Now, set your Samsung smart phone into Download mode. In my case, there were 2 reasons for this: Download and install the Odin flash tool, FRP reset firmware file and Samsung USB driver. Specifically I couldn't connect to the STM32 chip using SWD interface on my custom board, while everything worked fine on STM32F7xx running the same firmware on a NUCLEO board.

Hardware reset uploade mode