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<div>[[文件:Orange-pi-4-img35.png|800px|]]</div>
<div>[[文件:Orange-pi-4-img36.png|800px|]]</div>
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3)After decompressing the '''DriverAssitant_v4.6''' installation package, click the '''DriverInstall.exe''' program to start installing Rockchip Microdrive<br>
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<div style="padding-left:200px;">[[文件:Orange-pi-4-img37.png|600px|]]</div>
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4)The steps to install Rockchip Microdrive are as follows<br>
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<div style="padding-left:200px;">[[文件:Orange-pi-4-img38.png|600px|]]</div>
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<div style="padding-left:200px;">[[文件:Orange-pi-4-img39.png|600px|]]</div>
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5)Then connect the DC power adapter to the OrangePi 4, and then connect the OrangePi 4 to the Windows PC through the Type-C data cable<br>
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6)Then first press and hold the upgrade button, and then lightly press the reset button. The position of the buttons is shown in the figure below<br>
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<div>[[文件:Orange-pi-4-img40.png|800px|]]</div>
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7)If everything is normal at this time, OrangePi 4 will enter loader mode. If the development board is connected to the serial port, you will see the following output information in the serial terminal
<div style="border:1px solid #000;background:#f1f1f1;padding:5px;">
#Boot ver: 0000-00-00#0.00<br>
empty serial no.<br>
normal boot.<br>
checkKey<br>
vbus = 1<br>
rockusb key pressed.
</div>
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8)Then unzip and open AndroidTool
<div>[[文件:Orange-pi-4-img41.png|800px|]]</div>
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<div>[[文件:Orange-pi-4-img42.png|800px|]]</div>
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9)At this time, the Loader device recognized will be displayed under the AndroidTool tool, as shown below<br>
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<div>[[文件:Orange-pi-4-img43.png|800px|]]</div>
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10)Then click the '''"Upgrade Firmware"''' column, and then click the '''"Firmware"''' button to select the Android firmware path. At this time, you need to wait for a while. After the firmware is loaded, click '''"Erase Flash"''' to erase the EMMC system, and finally click the '''"Upgrade"''' button to burn. The sequence is shown in the figure below.<br>
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<div>[[文件:Orange-pi-4-img44.png|800px|]]</div>
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11)After the burning is completed, the AndroidTool display is as shown in the figure below, and the system will automatically start after the burning is completed<br>
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<div>[[文件:Orange-pi-4-img45.png|800px|]]</div>
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==== '''Burn Android image to EMMC via TF card''' ====
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1)First, prepare a TF card with 8GB or larger capacity. The transmission speed of the TF card must be above class10. It is recommended to use a TF card of SanDisk and other brands<br>
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2)Then use a card reader to insert the TF card into the computer<br>
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3)Download SDDiskTool from Orange Pi's data download page
<div>[[文件:Orange-pi-4-img46.png|800px|]]</div>
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4)Use decompression software to decompress '''SDDiskTool_v1.59.zip''', this software does not need to be installed, you can find '''SD_Firmware_Tool.exe''' in the decompressed folder and open it<br>
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<div>[[文件:Orange-pi-4-img47.png|800px|]]</div>
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5)After opening '''SDDiskTool''', if the TF card is recognized normally, the inserted disk device will be displayed in "Select Removable Disk Device". <span style="color:red;">Please make sure that the displayed disk device is consistent with the drive letter of the TF card you want to burn</span>. If there is no display, you can try to unplug and insert the TF card
<div style="padding-left:200px;">[[文件:Orange-pi-4-img48.png|600px|]]</div>
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6)Then start to write the Android firmware to the TF card
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a. First select the path of Android firmware in the "Select Firmware Upgrade" column<br>
b. Then select "Firmware Upgrade" in "Select Function Mode"<br>
c. Finally, click the "Start Create" button to start burning
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<div style="padding-left:200px;">[[文件:Orange-pi-4-img49.png|600px|]]</div>
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7) After burning, you can exit SDDiskTool, and then you can unplug the TF card from the computer and insert it into the development board. The boot will start to burn the Android image in TF to EMMC.<br>
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8)If the development board is connected to an HDMI display, you can also see the progress bar of burning Android image to EMMC from the HDMI display
<div style="padding-left:200px;">[[文件:Orange-pi-4-img50.png|600px|]]</div>
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9)When the following message is displayed, it means that burning the Android image to EMMC is complete, and you can pull out the TF card at this time, and then the system will start to boot
<div style="padding-left:200px;">[[文件:Orange-pi-4-img51.png|600px|]]</div>
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=== '''Method to burn Android image to EMMC based on Ubuntu PC''' ===
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1)For the image download method, please refer to Support EMMC to start the image download<br>
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2)Download the '''upgrade_tool tool''', this tool is suitable for Ubuntu PC system. Used to burn Android image to EMMC
<div>[[文件:Orange-pi-4-img52.png|800px|]]</div>
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<div>[[文件:Orange-pi-4-img53.png|800px|]]</div>
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3)Then execute the command in the terminal to decompress upgrade_tool and add executable permissions
<div style="border:1px solid #000;background:#f1f1f1;">
test@test:~$ unzip Linux_Upgrade_Tool_v1.39.zip<br>
test@test:~$ cd Linux_Upgrade_Tool_v1.39<br>
test@test:~/Linux_Upgrade_Tool_v1.39$ sudo chmod +x ./upgrade_tool
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4)Then connect the DC power adapter to the OrangePi 4 development board, and then use the Type-C data cable to connect the OrangePi 4 development board to the Ubuntu PC<br>
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5)Then press and hold the upgrade button of the Orange Pi 4 development board, and then lightly press the reset button. The position of the button is shown in the figure below<br>
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<div>[[文件:Orange-pi-4-img54.png|800px|]]</div>
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6)If everything is normal, OrangePi 4 will enter the loader mode at this time, and then execute the '''./upgrade_tool LD''' command to check whether the loader device is recognized
<div style="border:1px solid #000;background:#f1f1f1;">
test@test:~/Linux_Upgrade_Tool_v1.39$ ./'''upgrade_tool LD'''<br>
Program Data in /home/csy/.config/upgrade_tool<br>
List of rockusb connected(1)<br>
DevNo=1 Vid=0x2207,Pid=0x330c,LocationID=2010201 Mode=Loader
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7)Then copy the downloaded image to the Linux_Upgrade_Tool_v1.39 directory<br>
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8)The command to erase EMMC is as follows
<div style="border:1px solid #000;background:#f1f1f1;">
test@test:~$ '''sudo ./upgrade_tool''' <span style="color:red;">ef</span> '''OrangePi_4_Android8.1_v1.0.img'''
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9)Execute the following command to start burning Android firmware to EMMC
<div style="border:1px solid #000;background:#f1f1f1;">
test@test:~$ '''sudo ./upgrade_tool''' <span style="color:red;">ef</span> '''OrangePi_4_Android8.1_v1.0.img'''
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=== '''Enter maskrom mode to burn the system to EMMC''' ===
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Under normal circumstances, there is no need to enter the MaskRom mode. Only when the bootloader is damaged and the system cannot be started, you need to enter the maskrom mode to burn.<br>
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1)First make sure that the development board is disconnected from all power sources, and the SD card is pulled out<br>
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2)Then use metal tweezers to connect the solder joints reserved for OrangePi 4 (note the yellow circle in the picture below), and keep
<div>[[文件:Orange-pi-4-img55.png|800px|]]</div>
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3)Then plug the Orange Pi 4 into the DC power supply, wait for 2~3 seconds, and then loosen the metal tweezers. At this time, the OrangePi 4 development board will enter the maskrom mode<br>
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4)Then use the Type C cable to connect the OrangePi 4 development board and the Windows PC, and then open the AndroidTool tool, if everything is normal, you can see that AndroidTool has found a maskrom device
<div>[[文件:Orange-pi-4-img56.png|800px|]]</div>
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At this time, you can burn the Android image, please refer to the steps to burn the Android image directly to EMMC through the Type C interface<br>
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