I use Avnet Starter kit Rev2 board. I followed the External firmware update code as provided in the Sample.
I was able to send the firmware to the nrf52 device without enabling the CTS/RTS on Avnet device, but it is enabled on the nrf52 device.
Conditions are as belows:-
1) If Azure CTS/RTS is disabled and nrf CTS/RTS is enabled, and no jumper wires are connected between nrf CTS/RTS to azure RTS/CTS, firmware update won't work.
2) If Azure CTS/RTS is disabled and nrf CTS/RTS is enabled, and if a jumper wire is connected between Azure CTS to nrf52 RTS, then the firmware update will work.
How could this work. Please help me with this working logic. Thank you.