This guide is about how to make a “Fast Package Update Image”; This means that you will only change one part of Android. For example, only change the U-Boot, Kernel or System.
Preparations: 
Only Change the U-Boot 
1 2 3 $ cd  PATH_YOUR_PROJECT $ cd  bootload/uboot $ ./mk TARGET 
Copy files to output directory 
 
1 2 3 4 5 $ cd  PATH_YOUR_PROJECT $ cp  bootloader/uboot/build/u-boot.bin out/target/product/TARGET/bootloader.img $ cp  bootloader/uboot/build/u-boot.bin.usb.bl2  out/target/product/TARGET/upgrade/ $ cp  bootloader/uboot/build/u-boot.bin.usb.tpl  out/target/product/TARGET/upgrade/ $ cp  bootloader/uboot/build/u-boot.bin.sd.bin   out/target/product/TARGET/upgrade/ 
1 2 $ ./vendor/amlogic/common/tools/aml_upgrade/aml_image_v2_packer  -r out/target/product/TARGET/upgrade/aml_upgrade_package_avb.conf out/target/product/TARGET/upgrade/ out/target/product/TARGET/update.img 
Only Change the Bootup Logo 
1 2 3 4 $ cd  PATH_YOUR_PROJECT $ source  build/envsetup.sh $ lunch TARGET_LUNCH $ make logoimg 
1 $ ./vendor/amlogic/common/tools/aml_upgrade/aml_image_v2_packer  -r out/target/product/TARGET/upgrade/aml_upgrade_package_avb.conf out/target/product/TARGET/upgrade/ out/target/product/TARGET/update.img 
Only Change the DTB or Kernel 
1 2 3 4 $ cd  PATH_YOUR_PROJECT $ source  build/envsetup.sh $ lunch TARGET_LUNCH $ make bootimage 
1 $ ./vendor/amlogic/common/tools/aml_upgrade/aml_image_v2_packer  -r out/target/product/TARGET/upgrade/aml_upgrade_package_avb.conf  out/target/product/TARGET/upgrade/ out/target/product/TARGET/update.img 
Only Change the System 
1 2 3 4 $ cd  PATH_YOUR_PROJECT $ source  build/envsetup.sh $ lunch TARGET_LUNCH $ make systemimage 
1 $ ./vendor/amlogic/common/tools/aml_upgrade/aml_image_v2_packer  -r out/target/product/TARGET/upgrade/aml_upgrade_package_avb.conf out/target/product/TARGET/upgrade/ out/target/product/TARGET/update.img 
Note 
Replace PATH_YOUR_PROJECT to your project path 
Replace TARGET_LUNCH to your lunch select.
For VIM3, it’s kvim3-userdebug. 
For VIM3L, it’s kvim3l-userdebug. 
 
 
TARGET should be kvim3 or kvim3l