Try using the full update package from here: http://forum.xda-developers.com/show...php?p=53463611
Just unzip it, and place the dload folder on the root of your sd card, and do a local update from the System update app.
If the update fails, you'll most likely have to first do a local update to B125 or B132 in order to NOT lose your data.
If you don't mind starting from scratch, and want to skip installing B125, just do a forced update by holding the power and both volume buttons when you restart your device. Hold until you see the Huawei boot screen again, then let go.
Remember to use the Huawei backup app to make a backup of your data, and apps, if you so wish. [emoji106]
Sent from my Huawei P6
Phone: Huawei Ascend P6
ROM: EMUI2.3 KitKat