This is a collection of Huawei P9 Lite stock ROMs / firmware for all variants. Try not to use any of the firmware package on this page to flash any other device that does fit the P9 Lite variants listed here. It will cause the device to brick.
Learn how to root Huawei P9 Lite without stress
Download the firmware package from below and do not forget to post in comments section if your P9 Lite variant stock ROM is not listed here.
How to flash Huawei P9 Lite Stock Firmware
and follow the instructions in the post to flash any of the firmware in this post on your Huawei P9 Lite variant.