diff options
| -rw-r--r-- | docs/install/x200_external.md | 4 |
1 files changed, 3 insertions, 1 deletions
diff --git a/docs/install/x200_external.md b/docs/install/x200_external.md index 3ff34501..5dd39877 100644 --- a/docs/install/x200_external.md +++ b/docs/install/x200_external.md @@ -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 |