Changing working mode via download message

Hey all.

I did a google and this forum search but still not sure. I have a Drag lsn50 v2 that I want to change the mode to MOD=3 (3 ADC + I2C) and have found the entry in the manual and the AT command is AT+INTMOD=2
A google search found a simalar topuic and he said he used 0A 03 (change mod to 3)
then I found another example 0x0A 03

So can someone explain which is correct and why?