Yes, you can use a "JR" type module after you remove the hump by the pins in the module bay. The hump may or may not be there so if you get the module and it doesn't seat all the way, you have it and need to just take it down to flush with the module bay. This video goes over the removal of the existing module and if you plan on using the flysky module again, you will need to figure out a way to mount the antenna to the module itself so you don't have to take the radio apart every time you want to swap protocols. It is showing a Frsky module but any JR compatible module will work as well.