I'm not sure I understand your "it stays a non-SODE jetway." question. The ONLY thing the update does, is to restore the trigger to operate a jetway, even if it's not SODE, but it's not supposed to magically transform a non-SODE jetway into a SODE one.
To do that, assuming you are referring to replacing 3rd party *standard* Jetways with GSX L2 ones, you'll always have to to through the steps of first excluding the original jetways, by creating a Exclude XML file that can be compiled into a BGL with the GSX Control Panel, and THEN, on the next start, you can start adding GSX SODE Jetways.