flashrom

Identify, read, write, verify, and erase flash chips

brewmacoslinux

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Identify, read, write, verify, and erase flash chips

flashrom

List all detected flash chips and programmers$ flashrom

Read flash chip contents and save to file$ flashrom -p linux_spi:dev=/dev/spidev0.0 -r backup.bin

Write firmware to flash chip$ flashrom -p linux_spi:dev=/dev/spidev0.0 -w firmware.bin