you Downloaded firmware for Huawei Y7 Prime TRT-L21A with build Huawei Y7 TRT-LX1 TRT-L21 p4 pl HLRCF Toronto-L21C09B167CUSTC09D001 Firmware 7.0.0 r1 EMUI5.1.3 05014PJA
Huawei Y7 Prime TRT-L21A Published on Released 2017, June . with Android 7.0; EMUI 5.1.
Display size on Huawei Y7 Prime is 5.5" and the resolution is 720x1280 pixels

You can flash The Stock firmware of TRT-L21A using This Guide.
more about Huawei Y7 Prime TRT-L21A:

this model of huawei powerd by Octa-core 1.4 GHz Cortex-A53 and the internal storage size and ram size is 32GB storage, microSD card slot.
also it can support microSD, up to 256 GB (uses SIM 2 slot).
besides it can support Hybrid Dual SIM (Nano-SIM, dual stand-by) .
the Gpu chip model is Adreno 505 and also the Chipset model used on this model is Snapdragon 435
The camera on the Huawei TRT-L21A comes with and support 1080p video pixles.