removing piv unstable warnings

source/components/nitrokeys/features/piv/guides/client_logon_with_active_directory.rst

@@ -3,16 +3,10 @@ Client Logon with Active Directory
 
 .. product-table:: nk3
 
-This document explains how to use the PIV application of a Nitrokey 3 for smartcard logon with Active Directory.
+This document explains how to use the PIV application of a Nitrokey 3 for smartcard logon with Active Directory. It is available as of firmware version 1.8 and higher.
 
 In the future, this manual provisioning may be automated through a Windows MiniDriver.
 
-.. warning::
-   The PIV application of the Nitrokey 3 is currently considered unstable and is not available on the stable firmware releases.
-   To obtain that functionality it is required to install a test firmware.
-   Subsequent firmware updates may lead to loss of data and cryptographic keys.
-   Please refer to `the firmware update documentation </nitrokey3/windows/firmware-update.html#firmware-release-types>`__ for more information.
-
 Prerequisites
 -------------
 

source/components/nitrokeys/features/piv/index.rst

@@ -3,13 +3,8 @@ PIV (Personal Identity Verification)
 
 .. product-table:: nk3
 
-.. warning::
-   The PIV application of the Nitrokey 3 is currently considered unstable and is not available on the stable firmware releases.
-   To obtain that functionality it is required to install a test firmware.
-   Subsequent firmware updates may lead to loss of data and cryptographic keys.
-   Please refer to `the firmware update documentation <../firmware-update.html#firmware-release-types>`__ for more information.
-
 The *Personal Identity Verfication* (PIV) is based on the NIST special publication `SP 800-73 <https://nvlpubs.nist.gov/nistpubs/SpecialPublications/NIST.SP.800-73-4.pdf>`__.
+It is available as of firmware version 1.8 and higher.
 
 .. toctree::
    :maxdepth: 1