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====== Edge-2L Boot into Upgrade Mode ======

===== Introduction =====


<WRAP info >
You can enter Upgrade Mode using one of three methods: 

  * TST Mode (Recommended)
  * Serial Mode
  * Linux/Android Command Line Mode
</WRAP>

<tabbox TST Mode (Recommended)>
  - Connect the Edge-2L **Type-C port 2** to your PC using a USB-C data cable.
    - {{:products:sbc:edge-2l:hardware:edge-2l-interfaces-top-side.webp?600|}}
  - Quickly press the ''Function'' key **three times within two seconds**, then release it. The Power LED (red) will blink for approximately three seconds.
  - After the Power LED (Red) turns off, the board has entered Upgrade Mode (Maskrom Mode).

<tabbox Serial Mode>
  - Connect Edge-2L **Type-C port 2** to your PC using a USB-C data cable.
    - {{:products:sbc:edge-2l:hardware:edge-2l-interfaces-top-side.webp?600|}}
  - Set up a serial debug console by following the guide: [[products:sbc:edge-2l:development:setup-serial-tool|Setup Serial Tool for Edge-2L]].
  - Ensure all connections and serial settings are correct.
  - During boot, press the **''Spacebar''** on your keyboard to interrupt autoboot. This will drop you into the U-Boot command line.
  - At the U-Boot prompt, type **''run update''** and press Enter. The **red LED** will illuminate, indicating successful entry into Upgrade Mode.

<tabbox Linux Command Line>
  - Set up a serial debug console by following the guide: [[/products/sbc/edge-2l/development/setup-serial-tool|Setup Serial Tool for Edge-2L]].
  - Ensure all connections and serial settings are correct.
  - Boot your Edge-2L into Android or Linux and obtain a command-line shell (via serial or SSH).
  - Execute the appropriate command:
    - On Linux: Run ''sudo reboot loader''.
    - On Android: Run ''su'' followed by ''reboot loader''.
The system will reboot and enter Upgrade Mode (Loader Mode). The red LED will turn on to confirm.

</tabbox>