How do I get the eight CPU cores? Mine still shows 6c/12t

[MTSistemi]

The BC-250 ships as 6 cores / 12 threads. The two missing ones are switched off by
configuration, not defective — they are there and they work. Unlocking them is worth
about 20% on multi-threaded work, measured on our board.

Since 26.06.4 the unlock is off by default and opt-in, which is a change from earlier
releases and the reason you are seeing six.

[MTSistemi]

Open SkillFishOS Tuner, go to the CPU cores — live section and choose 8 cores,
then Apply. The board writes the SMU core-presence mask and reboots once: that reboot is
how the firmware re-reads how many cores it has, and there is no way around it.

Why it is opt-in now, since it used to be automatic: the service ran at sysinit.target on
every boot, including inside the live session, so a freshly booted installer could reboot
the board out from under itself and kill an installation part-way. That was
#31. It now refuses to act unless /etc/skillfish/core-unlock.abilitato
exists, and the Tuner is what creates it.

If you had already unlocked your cores on an older release, upgrading does not take them
away: the package notices the mask is already 0xff and writes the marker for you.