Honor 5x FRP unlock problem after March security level update

Hi, I have problem with my Honor 5x and newest Level Security from March.
I can't delete user's email from system with any metod found on the internet.

I found one way to enter Options on current security level but wipe from menu didn't work.
(holding Swype does not work anymore)

Also developer options are not available. Tapping on Build Number does nothing.

I tried:
- OEM cable / download metod with samsung bypass google verify.apk
- Factory Reset trough Options / trough boot menu
- Flash stock system with older security level trough backup menu but it fails

I think there is a problem with EMUI. Is they have better security than original clear Lolipop version?

Bootloader - Locked
Rooted - No

Someone has an idea how to bypass FRP on EMUI 3.1 with this update level?


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