[Xperia X][4.x] Stall on first security code screen after upgrade

REPRODUCIBILITY (% or how often): 100
BUILD ID = OS VERSION (Settings > About product):
HARDWARE (XA2, X10, X10 II, …): Xperia X
UI LANGUAGE: en
REGRESSION: (compared to previous public release: Yes, No, ?): ?

DESCRIPTION:

After upgrade to a new OS release after entering the set security code on first request (decryption, not user login) there is no reaction just the spinner continues. No further process even after hours

PRECONDITIONS:

Upgrade to a new OS release
(free OS version, upgrade executed via CLI, ssu re x.x.x.x and version -dup)

STEPS TO REPRODUCE:

  1. ssu re x.x.x.x
  2. version --dup
  3. reboot

EXPECTED RESULT:

Security code accepted and boot continues

ACTUAL RESULT:

Security code accepted and boot stalled

ADDITIONAL INFORMATION:

(Please ALWAYS attach relevant data such as logs, screenshots, etc…)
As this is the second time this happens to me I thought it is worth to report.
Did so for 4.1 and now for 4.2.
I do have defender (testing device) installed but pretty strong believe this has nothing to do with it as it seems to be “fixed” by a second boot.