This a guide to unlock your bootloader on a Huawei Ascend P7-L10.
After a long search on the web i finaly found a way to do this .
This will also remove T-Mobile apps an bootimage (JUNK) from your phone.
1. Download the .zip file (B121): https://mega.co.nz/#!j8ZyjBQL!6SH2_Y...AIows0vCNQtX44
or download the B126 her http://dl.huaweinews.com/Roms/Ascend...001C00B126.zip
2. Unpack the zip file.
3. Copy the "dload" map to the root of you phone.
4. Go to settings -> Updates -> Systemupdates -> Local update.
5. Back-up your phone and Install the update and you phone will have a unlocked bootloader
After this you can easly install TWRP on you Huawei Ascend P7-L10, so you dont have to ROOT your phone with some chinees root program.
Link to the TWRP threath: http://forum.xda-developers.com/asce...overy-t2811965