'''256MB DDR2 + 512MB EMMC Version Specs:'''

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'''512MB DDR2 + 4GB EMMC Version Specs:'''

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After receiving the product, please put the antennas of the product from the position of Pic 1 to the position of Pic 2 (or to the outside of the board), which can not be attached to the board so as not to affect the signal.<br>

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<div style="text-align:center;width:400px;display:inline-block;">图 1</div>

<div style="text-align:center;width:400px;display:inline-block;">图 2</div>

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Relevant keys and connectors for firmware flashing of 3G-IOT:

After compilation, all the firmware will generate on the directory of:<br>

code/IoT03_b1258_32g4g_ry_smt_v1.1 or code/IoT03L_b1258_wg_4g2g_ry_smt_v1.1 , and packed into compression file as the name of IoT03L_b1258_wg_4g2g_ry_smt_v1.1_20180403182516_v00_eng.zip.

You could download the '''Smart Phone Flash Tool''' on the download page of Orange Pi 3G-IoT section. There are tools for Windows and Linux version, you could select a suitable version according to your PC environment.<br>

Interface like the following:

Using method for both Windows and Linux versions are same, here will illustrate with Linux version<br>

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If it is the first time you use this software, you might receive the warn like the following. It is normal to receive this, you could click OK enter into the software. In the future you could manually specified the path of Scatter File.

* '''Enter into flash mode'''

a.Switch into Download page like the following:

b.Click choose on the right side of Scatter-loading File and select the path of Scatter File like the following:

c.After double click the selection, the '''partition information display section''' will automatically fill the path of each partition file and the absolute starting address to which they are to be flashed.

d.In the top left corner of '''partition information display section''', there would be a drop-down menu. Three of this options:<br>

Format All + Download // Format all information on the partitions and re-download the selected partition<br>

It you select Format All, you will lose the calibration information which we worked before sending out products. If this situation is inadvertent, please contact the Orange Pi service and obtain the calibration parameters through the machine code, and re-flash the calibration parameters.<br>

e.Insert Jumper cap：

f.Then connect with USB on PC and Mirco USB on Orange Pi via USB cable, the red LED will light up.<br>

h.The interface would show like the following after downloaded:

i.Take of the USB cable and insert Micro USB power supply<br>

Wait around 5 seconds, it will display the charging interface of shutdown<br>

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Enter the root password and press Enter

Choose 0 Build system with kernel/uboot/rootfs, enter the development board model selection interface.

Choose 22 orangepi 3G-iot，Press Enter and start download Orange Pi 3G-iot Linux Source Code

The downloaded source code will be stored in the same directory as OrangePi_Build. Orange Pi 3G-IOT Linux source code directory structure is as follows

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According to the board model to choose and press Enter.

Enter the root password and press Enter, then select the function needed to execute.

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The functions of each option are as follows:<br>

You can only login system via a serial port。After connecting to wifi, you can log in via ssh。<br>

When programming the system, the jumper cap connection method is as follows.

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=== '''3G-iot-A linux firmware burning''' ===

The previous "Android Firmware Burning" has introduced how to use the burning tool, so I won't go into details here, just open the burning tool directly.<br>

a.We click on the far right of the Scatter-loading File column And select the path of Scatter File, as shown below.

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b.Disconnect the board from the PC first, and click the Download button

c.Next, use a USB download cable to connect the host's USB to the machine's MircoUSB interface.

d.Only the lk and kernel were burned in the front. Since 3G-iot-A only has 512M on-board storage, there is a problem of insufficient space, so you need to burn the rootfs to a TF card, and prepare a TF card with more than 8G and class10. After formatting. Burn roofs.img as follows

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　Insert the tf card into the board, and it can start after power on. (Note that 3G-iot-A and other two LED lights are on, then plug in the serial port, otherwise it will not start)

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=== '''3G-iot-B linux firmware burning''' ===

And select the path of Scatter File, as shown below<br>

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b . First disconnect the board from the PC and click the Download button<br>

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C. Next, use a USB download cable to connect the host's USB to the machine's MircoUSB interface. Burning completed

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Start the system.<br>

Connect the board to a 5V2A power adapter. Connect the serial port to see the system startup。

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If the onboard space is not enough, you can burn the rootfs to the TF card. Proceed as follows.<br>

Burn boot.img that supports mounting TF card rootfs<br>

Click on the content in the box below

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In the pop-up window, select boot_sd.img.

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Download completed

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Burn rootfs to TF card<br>

* Green——RX

* White——TX

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=== '''Usage based on Windows platform''' ===

* '''Install USB driver'''

Download the latest version of the driver PL2303_Prolific_DriverInstaller_v130.zip, download and extract.

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Select application installation as an administrator

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Waiting for installation and click.

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* '''Download and install Putty'''

https://www.chiark.greenend.org.uk/~sgtatham/putty/latest.html

Double-click the downloaded putty.exe to open putty. The software interface is shown below.<br>

* '''Acquisition of device information'''

In Windows 7, we can check whether the serial port connection is normal and the serial port device No. through Device Manager. If the device is not recognized properly, please check if the driver is installed successfully. If there is a problem with the driver installation, try using the 360 Driver Master to scan the installation driver.

* '''Putty configuration'''

Set the serial port to the corresponding port number (COM4), turn off the flow control, and set the speed to 921600.

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* '''Start debugging serial output'''

The baud rate needs to be set to 921600<br>

And turn off flow control

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== '''Other settings''' ==