you Downloaded firmware for Huawei Y6 (2018) ATU-L11 with build Huawei Y6 2018 ATU-L11 ti it Italy TIM Atomu-L11 8.0.0.153(C55CUSTC55D1) Firmware 8.0.0 r1 EMUI8.0 05015DCF
Huawei Y6 (2018) ATU-L11 Published on Released 2018, May . with Android 8.0; EMUI 8.
Display size on Huawei Y6 (2018) is 5.7" and the resolution is 720x1440 pixels

You can flash The Stock firmware of ATU-L11 using This Guide.
more about Huawei Y6 2018 ATU-L11:

this model of huawei powerd by Quad-core 1.4 GHz Cortex-A53 and the internal storage size and ram size is 16GB storage, microSD card slot.
also it can support microSD, up to 256 GB (dedicated slot).
besides it can support Dual SIM (Nano-SIM, dual stand-by) .
the Gpu chip model is Adreno 308 and also the Chipset model used on this model is Snapdragon 425
The camera on the Huawei ATU-L11 comes with and support 1080p video pixles.