On IAdea device, it's possible that change customization Android boot animation by following steps.
- Prepare your own boot animation.
This document describe how to create an Android boot animation.
https://android.googlesource.com/platform/frameworks/base/+/master/cmds/bootanimation/FORMAT.md - Upload boot animation to IAdea device
You can use following steps to upload boot animation
- For Android 7.1 devices
adb root
adb remount
adb push bootanimation.zip /system/media/
adb reboot
- For Android 9 devices
adb root
adb disable-verity
adb reboot
adb root
adb remount
adb shell "mkdir /product/media/"
adb push bootanimation.zip /product/media/
adb enable-verity
adb reboot
After device reboot, you should see new boot animation.