I have tried all the possible solutions suggested in Huawei community forums such as:
- A factory reset: Didn’t work
- Wipe cache: Didn’t work
- Set apps not to run in the background: Didn’t work
- I tried to downgrade to the previous version with Huawei's HiSuite, however, the option “switch to other version” Does not show. Apparently Huawei has removed said option
In short my phone, that was working perfectly before the update, has become useless and there seems to be no way to go back to Oreo.
I live in the UK but I bought my phone online in Amazon.es (Spain), maybe there is some issue with the regions? Although, as I said above, I had no problem whatsoever before the upgrade. What can I do?
Is there any way to rollback to the previous version without HiSuite?
Best answer by Pablotronch
Taking advantage that I am on holiday in the North of Spain I brought my phone to the Huawei technical service in Santander.
They told me that these things happen at times after an OS update and that the best solution would be to flash my device and reinstall the latest reliable Android from scratch. So that's what they did: they installed the 184.108.40.2063 compilation and, after two days of using my phone, I can say it is running perfectly, smoothly, with normal battery consumption and no trace of the misterious "entitlement" app.
They were very professional an fast and the fix was free of charge due to the warranty: thank you!
On the contrary, I am still waiting for a response to the Email I sent to Huawei Support UK about the issue the same day I first posted here...
So, in short, if you are having similar issues, flashing your device may be the solution (I guess... )