![]() When the second read has completed run the command below. sudo flashrom -programmer ch341a_spi -read bios2.rom When the first read has completed run the command below. This command will read the data from the flashchip and save it as bios1.rom sudo flashrom -programmer ch341a_spi -read bios1.rom sudo flashrom -programmer ch341a_spi -r bios1.rom Run the following command from the terminal. We will then run an md5sum on all 3 roms to make sure they all match. Now that flashrom has successfully identified our flashchip we will do 3 READ operations on the chip so we will have ( bios1.rom bios2.rom and bios3.rom) In my case flashrom detected a Winbond flash chip Model# W25X64 with 8192 kB of memory.įound Winbond flash chip "W25X64" (8192 kB, SPI) on ch341a_spi. If everything is connected correctly then you should see output displaying the Brand Name, Model# and Size of the flashchip. Note: flashrom can never write if the flash chip isn't found automatically. Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns). Just double check your connections/pins and try again.įlashrom v1.2 on Linux 5.5.7-arch1-1 (x86_64)įlashrom is free software, get the source code at If you see “No EEPROM/flash device found” in the output then congratulations you have failed! It will detect and display chip information e.g (Found (ChipBrand) flash chip “Model#” (size kB, SPI) on ch341a_spi.)
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