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# 51NB X210
## Extracting vendor EC firmware
EC firmware is included in the SPI image. To extract it, run:
```
dd bs=64K skip=32 count=1 if=bios.rom of=ec.bin
```
and ensure that you have a file that includes the string "Insyde Software Corp".
## Flashing instructions
This can be performed using the internal SPI controller, even when flashing
from stock firmware. Use `flashrom -p internal` and follow the appropriate
flashrom instructions to force it. Alternatively, external flashing has been
tested with Dediprog SF100 and SF600 and using a Beaglebone Black. The flash
is located on the upper side of the motherboard, below the keyboard
connector. It is circled in red here:
## Flashing a subset of the ROM
If you want to flash coreboot without extracting firmware blobs, you can
flash coreboot without overwriting those blobs. After building coreboot,
create a layout file with the following content:
```
00000000:001fffff me
00200000:0020ffff ec
00210000:007fffff main
```
and run flashrom with the `--layout rom.layout --image main` arguments. This
will flash the main firmware without overwriting the existing EC or ME
firmware.
## Working
All hardware features are believed to be working, although the SD reader is
untested. Note that certain hotkeys don't work (including the ThinkVantage
button) - this is a limitation of the EC firmware, and these keys also
generate no events under the stock vendor firmware.
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