Upgrading From Android 7 To Android 9 Security Patch Level Dated April 5, 2021; Audiocodes Root Ca Certificate - AudioCodes 400HD Series User's And Administrator's Manual

CHAPTER 1 Overview

Upgrading from Android 7 to Android 9 security patch level dated April 5, 2021

●
●
●
●

AudioCodes Root CA Certificate

The following figure shows the AudioCodes Root CA Certificate.
On most C450HD / C448HD devices, upgrade to version 1.17 is performed with
no further actions required by the user or the network administrator. For
exceptional cases, see the next bullets.
Upgrade to 1.17 on C450HD / C448HD can be performed only if the device was
upgraded to 1.14 before. Upgrade from 1.14 to 1.17 can be performed through
Microsoft TAC or through AudioCodes Device Manager.
Customers upgrading from version 1.8 / 1.10 must take these steps:
✔ Upgrade to 1.14. Since direct upgrade to 1.17 is not possible, the customer
must first upgrade to 1.14 and then to 1.17.
✔ Customers with 1.8 / 1.10 cannot use the TAC to upgrade to 1.17. An
upgrade can be performed using AudioCodes Device Manager or
AudioCodes Android Phone Utility. Contact AudioCodes support for further
assistance.
With C450HD 2G-RAM devices (TEAMS-C450HD-DBW), a restore to default will
automatically occur and must be followed with a sign-in by the users (per device);
the device will become non-encrypted, similar to the C450HD non-DBW and the
C448HD that were non-encrypted in previous versions.
C448HD C450HD | Users & Administrator's Manual
- 10 -