4. Images Operation
4.1 Unzip Firmware
Step 1, unzip RKDevTool.rar
on Windows
Step 2, open RKDevTool\RKDevTool_Release\RKDevTool.exe
![_images/open_RKDevTool315.png](_images/open_RKDevTool315.png)
Step 3, click Advanced Function -> Firmware, select
update.img
. Click Unpack.
![_images/Debian_Unpack.png](_images/Debian_Unpack.png)
The unzip files will be generated in RKDevTool\RKDevTool_Release\Output\Android
and
RKDevTool\RKDevTool_Release\Output\Android\Image
![_images/Debian_Unpack_android.png](_images/Debian_Unpack_android.png)
![_images/Debian_Unpack_android_image.png](_images/Debian_Unpack_android_image.png)
4.2 Pack Image
Step 1, copy the firmware files to be packaged to Windows RKDevTool\rockdev\Image
![file path](_images/Debian_copy_firmware.png)
Step 2, enter RKDevTool\rockdev
, double-click to run``rk356x-mkupdate.bat``
![_images/debian_run_bat.png](_images/debian_run_bat.png)
update.img
will be generated in directory RKDevTool\rockdev\
![_images/debian_update_path.png](_images/debian_update_path.png)