View source for Rock2/square bb/loader mode

{{rock2_header}}

==Loader mode==
Loader mode is the mode when the board does '''not''' boot but waiting for the command from USB OTG port from PC.

=== The easy way ===
If you are running Rabian or Android, just run the following command in the terminal:

    sudo reboot loader

The board will reboot and go to loader mode.

=== Manually ===
The square baseboard has 3 keys on it, the '''recovery key''', '''reset key''' and the '''power key'''. We need to use the "recovery key" and "reset key" when go to loader mode.

[[File:Loader_mode.jpg]]

To go to loader mode, you need to:

# power the board, the red led indicate that the board is powered on
# connect the USB OTG port to PC(Important, you must connect the OTG cable first and then press the key as below)
# press and hold '''recovery''' key for 5 seconds (the one near '''DC jack''')
# short press and release(for 1 second) '''reset''' key(the one near '''wifi antenna''')
# release '''recovery''' key

Now the board should be in loader mode.

To check if the board is in loader mode in PC
===Windows===
===Linux===
Make sure you have USB ID '''2207:320a''', that is rock2 square in loader mode.
    lsusb
    ...
    '''Bus 001 Device 018: ID 2207:320a'''
    ...

==For developers ==
===U-boot===
In u-boot console, you can type '''rockusb''' to go to loader mode.
===Android===
If you are in android, you can use '''reboot loader''' command in [[Rock/linux_adb | adb shell]] or serial console. You can also use '''upgrade_tool SD''' command on PC to switch device from android to loader mode.

==See also==
* [[Rock2/square_bb/hardware]]
* [[rock/Loader_mode]]


[[Category:rock2_square]]