fuuuh...finally got it to work with firmware finder! love the new feature! ok, for guys that are totally new with this like me, i try to explain step to step method:
1. Download in playstore "Firmware Finder for Huawei"
2. Click the app and it will auto detect your phone. Click your phone model "BLA-******"
3.Find the firmware that end with B138 (i did it with 752mb OTA-MF) and click in
4. Check firmware access and check availability. it should mention firmware approved.
5. Click download and download the 3 files
6. Once download complete, go to your wifi (whichever that you are connnected) and click modify network > show advanced network > Proxy > manual. Key in the following:
-Proxy hostname: localhost
-Proxy port: 8080
-Click saved
7. Go back to the firmware finder and click "In-app Proxy"
8. Go back to phone setting>system>system update. At this point the new firmware should pop up.
9. Click quick update and pause it. Disable the "In-app Proxy"
10. Go back to your wifi setting and modify the network proxy to "None"
11. Then back to system update and press continue. Enjoy!!