Adobe Flash player in Solaris 11.1 desktop

Despite the very kind help on mitigating the obsolescence of Flash player treated on this other thread, somehow the "pkg install" command is "failing" stating something such as "No update necessary." which effectively installs nothing.
By now I'm running Solaris 11.1 desktop SRU 12.5:

$ pkg list -af *flash*
NAME (PUBLISHER)                                  VERSION                    IFO
SUNWfwflash                                       0.5.11-0.133               --r
system/flash/fwflash                              0.5.11-0.173.0.0.0.1.0     --r
web/browser/firefox/plugin/firefox-flashplayer    11.2.202.223-0.175.1.0.0.20.0 --o
web/browser/firefox/plugin/firefox-flashplayer    11.2.202.223-0.175.0.7.0.2.0 ---
web/browser/firefox/plugin/firefox-flashplayer    11.1.102.62-0.175.0.5.0.4.0 ---
web/browser/firefox/plugin/firefox-flashplayer    11.1.102.56-0.175.0.3.0.4.0 ---
web/browser/firefox/plugin/firefox-flashplayer    11.1.102.56-0.175.0.2.0.3.0 ---
web/browser/firefox/plugin/firefox-flashplayer    10.3.183.10-0.175.0.0.0.1.0 ---