It is now possible to downgrade the Ascend P7 from the Lollipop beta firmware (B805) back to its original KitKat firmware (B609), thanks to the official transition firmware provided by Huawei.
- Device: Huawei Ascend P7
- Model: P7-L10
- Transition Firmware: B800
- Build: P7-L10C900B800
- Intended Downgrade: B805 > B609
- Status: Official
- Type: Rollback firmware package
- Country: Italy
- File Name: Huawei P7 P7-L10C900B800-Transition_Pack_instructions.rar
- Size: 77.91 MB
Download Link: Click here to download B800 transition firmware
How to Downgrade
Step 1: This tutorial assumes that you have Ascend P7 (L10) running B805 Android 5.1.1 Lollipop beta firmware with stock recovery.
Step 2: Download the B800 transition firmware from above extract it. In addition to this, download the B609 KitKat firmware from here and extract its Update.app file too.
Step 3: Create a backup of your existing data using the inbuilt backup app. You may have to use that backup later.
Step 4: Copy B800’s Update.app file to the “dload” folder of the external SD card. Install this package from Settings > Updates > Menu > Local Update. Your reboot will reboot and install this transition firmware.
Step 5: When your phone starts up, you need to verify that its build number is now B800.
Step 6: Now copy B609’s Update.app package to the same dload folder. Make sure you delete the previous Update.app first.
Step 7: Finally, install B609 from Local Update. This firmware will take a little longer time to install as compared to B800. Upon completion it’ll automatically reboot.
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