To update the firmware of the STM32 of the ASPECT2-PCB, check out aspect2-stm32-updater.
flash_cli emmc info
flash_cli emmc --freq 25.0 read dump.bin 0x0 0x10000
flash_cli emmc write image.bin
flash_cli emmc dump-fuses
flash_cli emmc reset
flash_cli nor info
flash_cli nor --spi-clock 5000 read flash.bin
flash_cli nor read flash.bin 0x10000 0x8000 # offset + length
flash_cli nor write firmware.bin # erase then program
flash_cli nor erase 0x0 0x10000 # sector-by-sector
flash_cli nor chip-erase
flash_cli --device "My Board B" nor info