Hello, I am new to Huawei and want to upgrade my phone to Lollipop. The build version is V100R001C00B120SP04. Can I upgrade directly to Lollipop B324? Or do I need to perform any extra steps. I see someone has posted a question regarding the same firmware, but they did not really get an answer and I am not trying to take any risks. Thanks.
Hey hadiup! Yes, you can directly upgrade from B120SP04 to B324.
To upgrade, follow these steps:
1. Download B324, refer to the first post on this thread
2. Extract 'dload' folder and paste it to your phone's internal storage root
3. Go to Settings -> Updater -> Local update. Your phone should be able to detect the update
4. Update your phone and reboot
NOTE: If you encounter bugs and want to downgrade your phone back to B120SP04, follow these steps:
1. Download B120SP04 from CarbonTesla (just google CarbonTesla Mate 7 B120SP04)
2. Download B300 Transition Package
3. Extract B300 'dload' folder and paste it on your phone's internal storage root
4. Go to Settings ->Updater -> Local update. Your phone should be able to detect the update
5. Update and reboot. Check your phone's version. It must be on B300.
6. Delete B300 'dlaod' folder and paste B120SP04 'dload' folder to your internal storage root
7. Go to Settings -> Updater -> Local update. Your phone should detect the update.
8. Update your phone and reboot. Your phone should be back to B120SP04
Hope this helps!