Android 5.1.1: Broken encryption of exFAT SD cards

[avolkov]

Hello,

After upgrading of my phone to the 5.1.1 I've tried to (re)encrypt my phone and card, but without any success: card become unreadable and all data on it  disappeared. Card's reformatting doesn't helpful since card became unencrypted and any following reencryption lead to the same result: unreadable card. If someone have solution for this regression (except downgrade) please tell me.

Thank you
Andrey

Upd: As I've answered below, internal phone's memory has been encrypted successfully, problem only with SD. Also before wrote this post I've tried to do next things:
  - factory reset couple times
  - reinstall firmware by Companion
  - install AOSP
And probably Cyanogen has not problems with encryption, but I need for the worked camera.

[Uliwooly]

@avolkov

use the search bar, you might find similar posts

/t5/Xperia-Z3-Compact/What-s-about-Lollipop-encryption/td-p/1031934

/t5/Xperia-Z3-Compact/More-5-1-1-Problems-Sony-Google-come-on-sort-this-out/td-p/1019344

[avolkov]

Maybe I did not describe the problem clearly: the phone is properly encrypted, but the card doesn't. Nothing common with Z3 case.

[Uliwooly]

@avolkov

The phone its encrypted but not the SD card, is that what you are saying? 

[avolkov]

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@uliwooly wrote:

@avolkov

The phone its encrypted but not the SD card, is that what you are saying? 

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Yes, exactly.

[avolkov]

And, as far as I can see (due to empty search results), this problem appeared only with exFAT cards.

[Uliwooly]

@avolkov

If I recalled it was an Android issue but I'll keep looking

[avolkov]

I'm afraid that it's Sony creation. Half of year is more then enough to bump and publish such problem.

[Uliwooly]

@avolkov

I'll escalate this, perhaps we'll get an official answer.

[avolkov]

Thank you