huawei y7 prime 2017 TRT-L21a full latest flash file free for all tested by me
Toronto-L21AC185B184CUSTC185D001_Firmware_7.0.0_r1_EMUI5.1.3_05014MPA(Support.HalabTech.Com).zip
Toronto-L21AC185B184CUSTC185D001_Firmware_7.0.0_r1_EMUI5.1.3_05014MPA(Support.HalabTech.Com).zip