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

checksum_final_add_fletcher.exe OSTC4_firmware_upload.bin OSTC4_FONT_upload.bin OSTC4_RTE_upload.bin