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docs: Add note about write lock for flashing

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Signed-off-by: Tim Crawford <tcrawford@system76.com>
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Tim Crawford
2024-01-02 11:32:25 -07:00
committed by Jeremy Soller
parent 47b070418a
commit 11b1e724b5
1 changed files with 4 additions and 0 deletions
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docs/flashing.md
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@ -4,6 +4,10 @@
Use this method for flashing a system already running System76 EC.
This method will only work if the running firmware is not locked. Firmware is
write locked if it was built with `CONFIG_SECURITY=y`. firmware-update must be
used to flash from UEFI in this state (see `flash.sh` in firmware-open).
This will trigger a watchdog reset causing the system to **immediately power
off**. OS data may be lost or corrupted as a result. Save and close all
applications before flashing.