you Downloaded firmware for Huawei Y9 (2018) FLA-AL20 with build Board Software Huawei Y9 2018 FLA-L21 FLA-L22 FLA-L23 FLA-TL10 FLA-TL00 FLA-AL00 FLA-AL10 FLA-AL20 Florida-BD 1.0.0.46 Board Software General Android 8.0 EMUI8.0 05022JEV
Huawei Y9 (2018) FLA-AL20 Published on Released 2018, April . with Android 8.0; EMUI 8.
Display size on Huawei Y9 (2018) is 5.93" and the resolution is 1080x2160 pixels

You can flash The Stock firmware of FLA-AL20 using This Guide.
more about Huawei Y9 2018 FLA-AL20:

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 (dedicated slot).
besides it can support 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 FLA-AL20 comes with and support 1080p video pixles.