− | | Could be used on very old MCU_FIRM versions to upload [[MCU_Services#MCU_firmware_versions|MCU firmware]] if some conditions are met. | + | | Could be used on extremely old MCU_FIRM versions to upload [[MCU_Services#MCU_firmware_versions|MCU firmware]] if reg 0xF == 0 and reg 0x10 == 1 (presumably major and minor version fields for mcufw 0.1 which largely predates factory firm). |