Arnaud, there were some revisions of that security update. Could you retry with the newest? If it still hangs, please check if one of the open bug reports matches your processor model and report there.
Otherwise, please open a new report and add your processor model to the bug title, and in the bug report contents, please be sure to incude the output of "/usr/sbin/iucode_tool -Sv" as well as the contents of /proc/cpuinfo.
Arnaud, there were some revisions of that security update. Could you retry with the newest? If it still hangs, please check if one of the open bug reports matches your processor model and report there.
Otherwise, please open a new report and add your processor model to the bug title, and in the bug report contents, please be sure to incude the output of "/usr/sbin/ iucode_ tool -Sv" as well as the contents of /proc/cpuinfo.
Thank you!