Dear Axel_K

> 謝謝提醒
> 習慣了讓系統檢查，下載，最後自己按升級
> 看來得再檢查一下了

我找到國外論壇的討論如下：

"...From the email, I understood that if you have DSM 4.2 they recommend to REINSTALL build 3243. That is a different procedure than an update. Actually as I read from other users if DSM update is not showing available updates, given they actually exist, is a symptom that you may be infected. You can do some checks that helped me with SSH access, it's not difficult I did them myself and I'm not really experienced user...check this post: http://forum.synology.com/enu/viewtopic.php?f=19&t=80857..."

來源：Synology Forum: Re: How be 100% sure that I am not infected? Postby kpo » Tue Feb 18, 2014 8:26 pm

Wish it is enough to proof!

Best regards,

Amigo