The functions available are all part of NANDPro, xeBuild GUI does NOT directly communicate with any hardware flasher, it have support for sending commands to the included NANDPro build(s) it however isn't setup to work with Corona consoles (NANDPro 3.0 don't support Corona), i have built a library that does interact directly with NANDPro compatible devices (NAND-X, Matrix SPI Flasher etc. and also with JRProgrammer v1/v2) it can be found here: https://github.com/Swizzy/x360NANDManager along with a quick test GUI i setup to actually use it... it also supports 4GB Corona consoles (with 2 read/write modes)