The official C470B150 stock Lollipop firmware for Huawei P8 (GRA-UL00) is now available for Asian Pacific variants. You can download this firmware in Update.app format in this article below.
Stock B140 Android 5.0 Lollipop firmware based on EMUI 3.1 for the North African Huawei P8 (GRA-UL00) is now available for download via the direct download link provided in this post.
Huawei has officially published the stock B141 Emotion UI 3.0 firmware for the international Ascend P8 (GRA-UL00/GRA-UL10). You can download this firmware package via the direct download link provided below.