Is it possible to modify the hex code (e.g. nrf52832_xxaa.hex) so it UART pins will be 3,2 instead of 8,6?

[Avi]

I have a compiled code and I want only to change the uart pins without compiling the code again

If it is possible to modify only the hex code, how can I find the UART pins assignment? 

[Einar Thorsrud]

Hi,

In that case you would need to know exactly at which addresses the pin number is, and change all occurrences. This is not impossible, but if you only have the hex file finding it would not be trivial at all, and I cannot suggest how you should go about. I would think that rebuilding the app would be much, much faster.