I tried to read my mobos bios, got this message.
sudo flashrom --programmer internal -r ASRock_B450_test.bin
flashrom v1.1-rc1-70-g71b706f on Linux 5.2.14-arch2-1-ARCH (x86_64)
flashrom is free software, get the source code at https://flashrom.org
Using clock_gettime for delay loops (clk_id: 1, resolution: 1ns).
Found chipset "AMD FP4".
Enabling flash write... FCH device found but SMBus revision 0x59 does not
match known values.
Please report this to flashrom(a)flashrom.org and include this log and
the output of lspci -nnvx, thanks!.
Could not determine chipset generation.PROBLEMS, continuing anyway
No EEPROM/flash device found.
Note: flashrom can never write if the flash chip isn't found automatically.