*** Using Compiler 'V5.06 update 6 (build 750)', folder: 'C:\Keil_v5\ARM\ARMCC\Bin' Build target 'm0_ota_boot2' After Build - User command #1: fromelf --bin --output=s.bin .\Objects\Xinc_ble_sdk.axf After Build - User command #2: Xincboot_tool s.bin boot2 Xinc v3.1 build Mar 19 2019 23:08:55 USAGE: [Xincboot_tool] Input: s.bin boot2 Input file "s.bin" raw size = 0x13a0 byte -): ".\Objects\Xinc_ble_sdk.axf" - 0 Error(s), 0 Warning(s). Build Time Elapsed: 00:00:01