For build Simplicity Studio v.4.
SensiTHING1.0 uses bootloader /Firmware/bootloader-storage-internal-single-512k-combined.hex
To download the firmware, use the J-Link programmer and the J-Flash Light application or Simplicity Studio IDE. /Firmware/SensiTHING1.0.hex
Blue Gecko app for Android Blue Gecko app for iOS /Firmware/SensiTHING1.0.gbl