Program the firmware from U-Boot

Once you have the boot.img , recovery.img, and system.img already generated, you can use them to update your Android system from U-Boot. See Build the Android firmware for more information about building the Android system.

To flash the Android firmware from U-Boot, you must program a kernel (boot.img), a recovery boot image (recovery.img), and a root file system image (system.img) in the device's eMMC. Follow these steps to program Android in the eMMC of your ConnectCore 6:

Note See supported software to verify that your hardware is compatible with Android Lollipop.

Power off the device.
Change the boot mode configuration to boot from the internal eMMC. To do so, set the boot mode micro-switches as follows:
- SW3.1 OFF
- SW3.2 OFF
Place the system.img, the boot.img, and the recovery.img in the root of a FAT-formatted microSD card and insert it in the microSD socket of the ConnectCore 6 SBC.
After you build the Android firmware, these images are located inside the sources directory at
out/target/product/imx6_ccimx6_sbc.
Connect the serial adapter cable to the console port [CONS]. Connect a serial cable from the adapter to the development computer.
Open a serial connection to the serial port to which the ConnectCore 6 is connected. Use the following settings:
- Port: Serial port to which ConnectCore 6 SBC is attached
- Baud rate: 115200
- Data Bits: 8
- Parity: None
- Stop Bits: 1
- Flow control: None
Power on the device and immediately press a key in the serial terminal to stop the auto-boot process. You will be stopped at the U-Boot bootloader prompt:

U-Boot dub-2015.04-r8.3+g0de0373ade (Apr 23 2017 - 22:26:53)

CPU:   Freescale i.MX6Q rev1.5 1200 MHz (running at 792 MHz)
CPU:   Extended Commercial temperature grade (-20C to 105C) at 48C
Reset cause: POR
I2C:   ready
DRAM:  1 GiB
MMC:   FSL_SDHC: 0 (eMMC), FSL_SDHC: 1
In:    serial
Out:   serial
Err:   serial
ConnectCore 6 SOM variant 0x02: Consumer quad-core 1.2GHz, 4GB eMMC, 1GB DDR3, -20/+70C, Wireless, Bluetooth, Kinetis
Board: ConnectCore 6 SBC, version 3, ID 129
Boot device: MMC4
PMIC:  DA9063, Device: 0x61, Variant: 0x60, Customer: 0x00, Config: 0x56
Net:   FEC [PRIME]
Normal Boot
Hit any key to stop autoboot:  0
=>
=>

Configure the partition table of the eMMC to hold Android images by executing these commands:
```
=> setenv mmcdev 0
=> run partition_mmc_android
```
Update the kernel partition issuing this command:
```
=> update boot mmc 1 fat boot.img
```
Wait until the process ends, then execute the following command to update the Android file system:
```
=> update system mmc 1 fat system.img
```
Wait until the process ends, then update the recovery partition issuing this command:
```
=> update recovery mmc 1 fat recovery.img
```
Wait until this process finishes to force the format of cache and data partitions:
```
=> bootargs_once="androidboot.cache=format androidboot.data=format"
```

Note If the cache and data partitions are already formatted or you wish to preserve their contents, you can skip this command.

Boot the device executing this command:
```
=> boot
```

Note The first Android boot takes several minutes due to system deployment.