I have JTAG flashed images with no bootloader support, and now i’d like to add the serial bootloader support back.
I added the flag to prj.conf
and i flashed using west. I also tried flashing merged.hex using nrf connect programmer.
I can’t get boot mode to come up by holding MD and pressing reset.
the application works, but serial boot loader does not.
I’ve even tried this with nfed/samples/blinky
Any thoughts? How can I get this back to ‘factory’ default using JTAG - to where serial bootloader works with newtmgr again?
(I’m using a sparkfun board, but also have a circuit dojo feather nrf9160 … i’ll try that next)