Upgrade the firmware Introduction This article describes how to upgrade the firmware file on the host to the flash memory of the development board through the Dual male usb data cable. When upgrading, you need to choose the appropriate upgrade mode according to the host operating system and firmware type. Preparatory work AIO-1808-JD4 Firmware host computer Dual male usb data cable There are two types of firmware files: A single unified firmware update.img that packs the boot loader, parameters, and all partition images together for firmware publishing. Multiple partition images, such as kernel.img, rootfs.img, recovery.img, etc. are generated in the development stage. You can find the compiled unified [AIO-1808-JD4 firmware] here, download it and unpack it.You can also refer to the instructions for compiling firmware to compile by yourself. Host operating system support: Windows XP （32/64 bits） Windows 7 (32/64 bits) Windows 8 (32/64 bits) Linux (32/64 bits) Host connection development board: One end of the male-to-male USB cable is connected to the USB 3.0 interface of the development board, and the other end is connected to the host, as shown in the figure. Windows Tool: Androidtool_xxx ( version number) Install RK USB drive Download Release_DriverAssistant.zip , extract, and then run the DriverInstall.exe inside . In order for all devices to use the updated driver, first select "驱动卸载" and then select "驱动安装". Connected devices You can put the device into upgrade mode as follows: disconnect the power adapter first : Dual male usb data cable connects one end to the host and the other end to the development board press the RECOVERY button on the device and hold. connect to the power supply about two seconds later, release the RECOVERY button. The host should prompt for new hardware and configure the driver. Open Device manager and you will see the new Device" Rockusb Device" appear as shown below. If not, you need to go back to the previous step and reinstall the driver. Upgrade the firmware Download AndroidTool ，extract,Run AndroidTool.exe in the AndroidTool_Release_xxx directory. (note: if it is Windows 7/8, you need to press the right mouse button and choose to run as an administrator), as shown below: Upgrade unified firmware - update.img The steps to update the unified firmware "update.img" are as follows: Switch to the "upgrade firmware" page. Press the "firmware" button to open the firmware file to be upgraded. The upgrade tool displays detailed firmware information. Press the "upgrade" button to start the upgrade. If the upgrade fails, you can try to erase the Flash by pressing the "erase Flash" button first, and then upgrade. Note: if the firmware laoder you wrote is inconsistent with the original one, please execute "wipe Flash" before upgrading the firmware. Upgrade Partition image Each firmware partition may be different, please note the following two points: The steps to upgrade the partition image are as follows: Switch to the "download image" page. Check the partition to be burned, and select multiple. Make sure the path of the image file is correct. If necessary, click the blank table cell on the right side of the path to select it again. Click "execute" button to start the upgrade, and the device will restart automatically after the upgrade. Linux There is no need to install device driver under Linux. Please refer to the Windows section to connect the device. Tool : upgrade_tool_xxx (version number) Upgrade_tool Download Linux_Upgrade_Tool , And install it into the system as follows for easy invocation: unzip Linux_Upgrade_Tool_xxxx.zip cd Linux_UpgradeTool_xxxx sudo mv upgrade_tool /usr/local/bin sudo chown root:root /usr/local/bin/upgrade_tool Upgrade unified firmware - update.img： sudo upgrade_tool uf update.img If the upgrade fails, try erasing before upgrading. # erase flash : Using the ef parameter requires the loader file or the corresponding update.img to be specified # update.img :The ubuntu firmware you need to upgrade . sudo upgrade_tool ef update.img # upgrade again sudo upgrade_tool uf update.img Upgrade Partition image Linux: Using the following methods: sudo upgrade_tool ul $LOADER sudo upgrade_tool di -p $PARAMETER sudo upgrade_tool di -uboot $UBOOT sudo upgrade_tool di -trust $TRUST sudo upgrade_tool di -b $BOOT sudo upgrade_tool di -r $RECOVERY sudo upgrade_tool di -m $MISC sudo upgrade_tool di -oem $OEM sudo upgrade_tool di -userdata $USERDATA sudo upgrade_tool di -rootfs $ROOTFS If the upgrade fails due to flash problems, you can try low-level formatting and erase nand flash: sudo upgrade_tool lf update.img # low-level formatting sudo upgrade_tool ef update.img # erase FAQs Q1: How to enter MaskRom mode A1 : If the board does not enter Loader mode, you can try to force your way into MaskRom mode. See operation method "How to enter MaskRom mode" .