you Downloaded firmware for Huawei Y3 (2017) Cairo-L03 with build Cairo-L03C789B131
Huawei Y3 (2017) Cairo-L03 Published on Released 2017, September . with Android 6.0; EMUI 4.1 Mini.
Display size on Huawei Y3 (2017) is 5.0" and the resolution is 480x854 pixels

You can flash The Stock firmware of Cairo-L03 using This Guide.
more about Huawei Y3 2017 Cairo-L03:

this model of huawei powerd by Quad-core 1.1 GHz Cortex-A53
Quad-core 1.3 GHz Cortex-A7 - CRO-U00 and the internal storage size and ram size is 8GB storage, microSD card slot.
also it can support microSD, up to 128 GB (dedicated slot).
besides it can support Dual SIM (Micro-SIM, dual stand-by) .
the Gpu chip model is Mali-T720MP2
Mali-400MP2 - CRO-U00 and also the Chipset model used on this model is MT6737М
The camera on the Huawei Cairo-L03 comes with and support 720p video pixles.