Here is the official B340 Android 6.0 Marshmallow update for the Asian Huawei Mate S (CRR-UL00) variant available to download.
The final Android 6.0 Marshmallow firmware build is now available for Huawei Mate S (CRR-UL00, CRR-L13 & CRR-UL20) in Middle Eastern countries. You can download the full firmware package as Update.app for the aforementioned variants below.
Huawei has released the first Lollipop firmware, build C433B114, for the Mate S (CRR-UL00) from Middle Eastern and North & South African countries. You can download this firmware as full Update.app package below.
Huawei has officially uploaded the kernel source code of its Mate S based on Android 5.1.1 Lollipop online. You can download these files via the direct download link provided here.
Stock Android 5.1 Lollipop firmware of Chinese Huawei Mate S variants (CRR-CL00 & CRR-UL00) has officially been made available for download by Huawei.