For those DTX502 owners out there who don't own an iOS device, Yamaha is providing a downloadable updater file for PC (Windows OS, not Mac) to help update the firmware on the unit to the latest version as of this post - V1.30.
To download the Updater File and Firmware Guide, please click see the Yamaha Downloads page here. Some of the improvements the latest Firmware offers are as follows:
Added new pad types for the DT50S/DT50K.
Added new Trigger Setups "DT50" and "DT50Mesh".
Now supports Input Exchange for trigger setting.
Added new Copy function by each two piezos for Copy Trigger.
New 3-Layer and 4-Layer functionality on snare instruments.