C:\Program Files (x86)\Sony Mobile\Update Service\db\xxxxxxxx\blob_fs
As said DooMLoRD - firmware failed to create the current flashtool.
But I did the addition to the flashtool to correctly identify device. Extract folder LT36 (C6603) at \ Flashtool \ devices \ (c:\Flashtool\devices\LT36 (C6603)\). Download: LT36 (C6603) (Press "Ctrl +S" to download archive)
If the principle of re-locking bootloader remains the same for SXZ - I can do that and re-lock file Download: LT36 (C6603)_Relock_bootloader_Dogsly_test.ftf