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