The UBW32 uses the PIC32MX795F512L 32-bit CPU from Microchip.
https://www.sparkfun.com/products/9713
http://www.schmalzhaus.com/UBW32/
Getting below error
satheesh@linux-2030020140 ~/workspace_iot/git.hub/nuttx (master) $pic32prog nuttx.hex
Programmer for Microchip PIC32 microcontrollers, Version 2.0.235
Copyright: (C) 2011-2015 Serge Vakulenko
Adapter: HID Bootloader
Program area: 1d005000-1d07ffff
Processor: Bootloader
Flash memory: 492 kbytes
Boot memory: 80 kbytes
Data: 137204 bytes
Erase: done
Program flash: address 1d000000 out of program area
address 1d000038 out of program area
address 1d000070 out of program area
address 1d0000a8 out of program area