you Downloaded firmware for Huawei nova 2 plus BAC-L21 with build BAC-L21C185B161
Huawei nova 2 plus BAC-L21 Published on Released 2017, June . with Android 7.0; EMUI 5.1.
Display size on Huawei nova 2 plus is 5.5" and the resolution is 1080x1920 pixels

You can flash The Stock firmware of BAC-L21 using This Guide.
more about Huawei nova 2 plus BAC-L21:

this model of huawei powerd by Octa-core (4x2.36 GHz Cortex-A53 & 4x1.7 GHz Cortex-A53) and the internal storage size and ram size is 64/128GB storage, microSD card slot.
also it can support microSD, up to 256 GB (uses SIM 2 slot) - dual SIM model only.
besides it can support Single SIM (Nano-SIM) or Hybrid Dual SIM (Nano-SIM, dual stand-by) .
the Gpu chip model is Mali-T830 MP2 and also the Chipset model used on this model is HiSilicon Kirin 659
The camera on the Huawei BAC-L21 comes with and support 1080p video pixles.