Embedded Development Learning (5)

1. Because I accidentally failed to flash Android 2.3 with fastboot, the development board was bricked. Later, I flashed Android 4.0.4 back through USB with dnw tool. The summary is as follows:

1. Install the USB driver.

Download dnw.exe and dnw_driver_win7-64 driver packages (mine is win7-64).

Download dseo13b.exe crack software.

Download uboot.bin, x210_usb.bing.

Use secureCRT to connect to the board.

Run dseo13b.exe, select the first option > next > OK. As shown below:

Then select the third option > next, enter the inf64 folder path of dnw, for example, mine is E: Baidu Netdisk Download Development Edition CD Data X210V3S_Atools USB Driver dnw_driver_win7-64inf64. > next > OK.

Then select the last item Exit, >next > restart the computer.

Open the device manager to update the driver of SEC S5PC110 Test B/D. (This step took me several hours. When I turned on the computer, I couldn’t find the driver name in the device manager. Check the USB cable connection and whether the development board switch is on USB startup. After everything is normal, long press the power switch of the development board, release it, and long press it. Do this several times. At the same time, pay attention to the changes in the device manager. If you find the driver name above, right-click to update the driver immediately and select the driver file as inf64/.inf file).

After the update is successful, open the dnw.exe software, press and hold the power switch of the development board, release it, and when you find usb:ok, it proves that the driver and USB connection are ok, as shown below:

Open Configuration> Options, select the correct serial port, such as COM3 (check and change in Device Manager> Port), select 115200, and fill in 0xd0020010 (BL1 address of iRAM) in download address, as shown below:

Keep pressing the power switch of the development board > select USB port > Transmit > transmit, select the prepared x210_usb.bin > open, then you will find that usb:x and usb:OK will flash, indicating that the code has been written to iRAM.

Repeat the previous step, change the download address to 0x23e00000, and select the uboot.bin prepared in advance. This step is to write the code to DRAM to initialize DRAM.

You can release the power switch. Then start the timer and press the Enter key within three seconds as shown below:

Now you can enter the boot program normally, and then you can flash it as you want. The brick is saved. The above is the remedy after the system is bricked. The following will follow the content of flashing the system normally with fastboot.