Here is the download link of B321 build and the step by step installation procedure. Before flashing you will need to must take a backup of your data which is in your phone. After flashing your will permanently lose it and your phone will be restore in its original settings. You can safely restore your data to your phone after successful flashing. The flashing process will take enough time to complete so still wait for several minutes until flashing progress will not be completed. The firmware of your phone is in RAR file and it has maximum size. It will take upto 2 -3 hours during download. Their are several tools and boxes which will help you in flashing. It is little bit difficult work for you to flash phones with tools instead of flashing with boxes.
Download links
Huawei G8 rio-l01 Firmware Download
Huawei G8 rio-l01 Firmware – Flash File – ROM Download Free
The Developers of Huawei has been released latest and official firmware Android 6.0.1 B321 EMUI 4.0 build for the Huawei G8 RIO-L01 and we have published it on this page. The OTA alerts and manual update method both are available. You can use this original firmware for hard flashing your phone. First of all download the firmware and put it in one specific folder in C:Program Files because during flashing your should find it easily. Flashing of mobile does at those stage if phone’s firmware has corrupted due to any virus detection or other reason. However you will need to follow some points which are very important for flashing any phone. If you are out of OTA or didn’t eligible for OTA then here you can upgrade Huawei G8 RIO-L01 to Android 6.0.1 B321 EMUI 4.0 Marshmallow manually.