Android 4.2.2 images for A20-OLinuXino running from SD-card is updated on wiki


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Android 4.2.2 now is available on SD card for A20-OLinuXino.

Runnning Android from SD card is about 2-3 times slower than from NAND but for these who choose A20-OLinuXino without NAND this is the only way they can run Android on this board.

Two images are build one for 7″ LCD and one for 10″ LCD https://www.olimex.com/wiki/A20-OLinuXino-MICRO#Android

To write the images on the SD card you will need PhoenixSuit and to follow these steps:

  • Install and run PhoenixSuit.
  • Go to firmware tab of the program and point to a valid Android image (note that the images on Gdrive are compressed you have to uncompress them to .img files to may write them with PhoenixSuit
  • Disconnect the power supply and USB cable from the A20 board. Put a SD card in micro SD holder. We recommend 4GB class 10 card.
  • Press and hold RECOVERY button, apply power supply (6-16)V, release RECOVERY button.
  • Connect USB cable to the mini USB connector.
  • You will be asked for drivers for the boot-loader. Navigate to the folder where you extracted the PhoenixSuit and install the drivers from the respective executables (or manually point the installer to the drivers folder in the PhoenixSuit installation path).
  • PhoenixSuit will detect the board and would ask for the method of writing the image. Choose method of writing the image and confirm your wish to write the image.
  • Wait till upgrade succeeds

Note that it is not recommended to have your mini USB connected to an external USB hub. This might cause delays and might distort the signal levels. Always test with the USB connected straight to the USB ports of your computer.

 

Important: When Android runs for very first time it takes several minutes to initialize all files and buffers please do not cut power supply during this process! Also when fresh image is installed fast boot is disabled, this means that when you apply power supply after few seconds Android will go in sleep mode and you have to press POWER button to start it, you can change to fast boot when you power off there is dialog box asking you if you want next boot to be fast boot, you have to check this box before you power off. Also note that you must do touch screen calibration when you run Android for very first time.

1 Comment (+add yours?)

  1. Деян Добромиров
    Oct 20, 2015 @ 14:04:19

    That’s awesome

    Reply

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