diff options
| -rw-r--r-- | docs/install/x200_external.md | 8 |
1 files changed, 5 insertions, 3 deletions
diff --git a/docs/install/x200_external.md b/docs/install/x200_external.md index 3ff34501..83a5c23f 100644 --- a/docs/install/x200_external.md +++ b/docs/install/x200_external.md @@ -19,7 +19,7 @@ Flash chip size Run this command on x200 to find out flash chip model and its size: - # flashrom -p internal -V + # flashrom -p internal The X200S and X200 Tablet will use a WSON-8 flash chip, on the bottom of the motherboard (this requires removal of the motherboard). Not all X200S/X200T are @@ -163,7 +163,9 @@ Now compare the 3 images: # sha512sum factory*.rom -If the hashes match, then just copy one of them (the factory.rom) to a +If the hashes match and if hex editor (like `dhex`) shows that +they have valid contents (eg. it's not filled entirely with `0x00`/`0xFF`), +then just copy one of them (the factory.rom) to a safe place (on a drive connected to another system, not the BBB). This is useful for reverse engineering work, if there is a desirable behaviour in the original firmware that could be replicated in coreboot @@ -178,7 +180,7 @@ address to one that is correct for your system. Now flash it: - # ./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -w path/to/libreboot/rom/image.rom -V + # ./flashrom -p linux_spi:dev=/dev/spidev1.0,spispeed=512 -w path/to/libreboot/rom/image.rom  |