huawei p8 bootloader unlock without IMEI & Debranding questions

Hello guys.

So I was just wondering if you could unlock the bootloader and root without sending your imei to huawei, and how to debrand your phone with a backup. Last time I did this, I forgot to backup and my ascend p7 stuffed up really badly. I really dont want this to happen again, to this brand new p8, so any detailed help would be very useful. Will post firmware version, the phone is the p8 model is GRA-L09.

Thanks

Edit:image

Clean debranding P8 (GRA-L09)

This is the only clean way to debranding your P8 with official Huawei update L09V100R001C900B170.

1. Download from Huawei Hungary the latest european version L09V100R001C900B170 : http://download-c.huawei.com/downloa...43&siteCode=hu

2. You will find in downloaded file 'D__documents_Temp_upload_GRA-L09C900B170CUSTC432D001-Europe.rar' two folders :
/CUSTOM
/dload

3. Copy both folders /CUSTOM and /dload forders with one update.app in each folder in your SD card

4. Shut down your P8

5. Press "Vol+" + "Vol-" + "Power" until your P8 vibrates

6. Update will start. If you have an operator ROM, you might get un error message at the end. Do not worry.

7. Turn on your P8 and configure it (don't need to create Google account or even to connect it to WiFi.

8. Open Huawei File Explorer and rename /dload folder containing update.app (2.91 Gb) to /dload.rom (or other name you fancy)

9. Rename /CUSTOM folder containing update.app (19Kb) to /dload

10. Repeat steps 4 to 7

11. Open Huawei File Explorer and rename /dload folder containing update.app (19Kb) to /CUSTOM

12. Rename /dload.rom folder containing update.app (2.91 Gb) to /dload

13. Repeat AGAIN steps 4 to 7

14. Open Huawei File Explorer and delete /CUSTOM and /dload folders from your SD card.

That's it. Your P8 bought from your operator will be now complete debranded with the latest European ROM

NB: Steps 10 to 13 (to reflash L09V100R001C900B170 after flashing the patch in /CUSTOM folder) are recommended to have a clean installation.