Wait until the installation process is complete and then reboot your device.Now click on Project Menu -> Software Upgrade -> SDCard Upgrade.Now dial *#*#2846579#*#* from your phone dialer to open a hidden menu.Now create a folder dload in the root of your SD card and place the update.app file in that folder.First, download Full ROM for Huawei P8 from above and extract it.How to Install B392 Software Update on Huawei P8 –For Full ROM Download Huawei P8 B392 Full ROM for GRA -L09 – Download.Download Huawei P8 B392 OTA for GRA-L09 – Download.Make sure that your device has at least 50-60% charged to avoid the unexcepted shutdown in-between the process.It will wipe all your personal data including data of internal storage, so we recommend you first to take a full backup of your phone and then proceed.

We are not liable for any harm of your device. Follow these steps carefully otherwise you may crash your device.Your device must be on stock firmware and stock recovery.This Firmware file is only for Huawei P8 GRA-L09.

Ota firmware huawei