Directly jumping from an old firmware version to V500R02 might be blocked by the bootloader.
Before you begin, ensure you have the that perfectly matches your hardware version. Using the wrong firmware can permanently damage your device. v500r02 firmware link
Compare the output string against the hash provided on the official download page. 2. Transfer the Firmware to the Device Directly jumping from an old firmware version to
Many community-shared firmware links point to Chinese cloud storage services: v500r02 firmware link