you Downloaded firmware for Huawei Y9 (2019) Jackman-L22 with build Board Software Huawei Y9 2019 JKM-L21 JKM-L22 JKM-L23 JKM-TL00 JKM-AL00 JKM-AL10 JKM-AL20 Jackman-AL00D-BD 1.0.0.50 Board Software general 8.0.0 r1 EMUI8.2 05022STR
Huawei Y9 (2019) Jackman-L22 Published on Released 2018, October . with Android 8.1; EMUI 8.2.
Display size on Huawei Y9 (2019) is 6.5" and the resolution is 1080x2340 pixels

You can flash The Stock firmware of Jackman-L22 using This Guide.
more about Huawei Y9 (2019) Jackman-L22:

this model of huawei powerd by Octa-core (4x2.2 GHz Cortex-A73 & 4x1.7 GHz Cortex-A53) and the internal storage size and ram size is 128GB storage, microSD card slot.
also it can support microSD, up to 400 GB.
besides it can support Dual SIM (Nano-SIM, dual stand-by) .
the Gpu chip model is Mali-G51 MP4 and also the Chipset model used on this model is Hisilicon Kirin 710
The camera on the Huawei Jackman-L22 comes with and support 1080p video pixles.