Tools:
1) serec_cat.exe v1.64(is part of SRecord) http://srecord.sourceforge.net/download.html
2) elftosb.exe v5.1.19 https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools/mcuboot-mcu-bootloader-for-nxp-microcontrollers:MCUBOOT?tab=Design_Tools_Tab
3) blhost.exe v2.6.2 https://www.nxp.com/design/software/development-software/mcuxpresso-software-and-tools/mcuboot-mcu-bootloader-for-nxp-microcontrollers:MCUBOOT?tab=Design_Tools_Tab