791b3224f9
Replace the vague step about grounding with one that says to connect a USB cable and explain its purpose.
41 lines
1.1 KiB
Markdown
41 lines
1.1 KiB
Markdown
# Flashing firmware
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## Internal programmer
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Use this method for flashing a system already running System76 EC.
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This will trigger a watchdog reset causing the system to immediately power off.
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Save and close all applications before flashing.
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```
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make BOARD=<vendor>/<model> flash_internal
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```
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## External programmer
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Use this method for first-time flashing or flashing a bricked controller.
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This requires:
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- [A configured Mega 2560](./mega2560.md): For programming the EC itself
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- A USB cable: For creating a common ground and providing power
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- USB-C is recommended, but USB-A will work as well
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- A second computer: For building and flashing the firmware
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**The system must not have any power!**
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1. Turn off the laptop
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2. Unplug the AC adapter
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3. Remove the bottom panel
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4. Disconnect the battery
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5. Disconnect the keyboard from its port
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6. Replace the bottom panel and flip the laptop back over
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7. Connect the USB cable from the laptop to the host machine
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8. Connect the Mega 2560 to the host machine
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9. Attach the programmer to the keyboard port
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10. Flash the firmware
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```
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make BOARD=<vendor>/<model> flash_external
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```
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