Jump to Bootloader: In the previous version it was hard to get into the bootloader at startup. Rootcause was a change in the timing of the loop operations which detect a key press. The countdown values have been increased to allow an easier jump to the bootloader

copy ..\..\OSTC4_Firmware\Release\OSTC4_Firmware.bin OSTC4_Firmware.bin /V /Y
copy ..\..\OSTC4_RTE\Release\OSTC4_RTE.bin OSTC4_RTE.bin /V /Y