A step-by-step guide to download and install Huawei 506HW-2 firmware (Stock ROM), you need to follow the following steps:
Download Huawei 506HW-2 firmware file. The software update will help you upgrade, downgrade, or re-install the stock firmware (ROM) on your device. After extracting the package on the computer. You will be able to get the Firmware, Flash Tool, and Driver.
Install the provided USB Driver on your computer (SKIP this step if it is already installed).
Follow instructions on how to flash or update Huawei 506HW-2 firmware. Click HERE
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Huawei 506HW-2 WebUI 21.180.99.04.00 Universal