You held Volume Up instead of Down, or you released Volume Down too early.
: Continue holding both keys for several seconds until the Fastboot & Rescue Mode screen appears. How to Open Fastboot Mode on HUAWEI Ascend Y300
To open Fastboot Mode on a HUAWEI Ascend Y300 , you primarily use a specific physical button combination while the device is powered off How to Enter Fastboot Mode You held Volume Up instead of Down, or
Many users struggle with entering Fastboot on older Huawei devices due to driver issues or hardware degradation. Here are common fixes. How to Open Fastboot Mode on HUAWEI Ascend Y300