Samsung has started rolling out a new firmware update for the Galaxy A5 (2016). October is over but the Galaxy A5 (2016) is just now getting last month's security patch. This update also brings a fix for a critical security vulnerability, at least that's what the change log says. This update is currently being rolled out for the Galaxy A5 (2016) model number SM-A510F in Europe.
Since this is just a security update it only weighs in at 21MB. Aside from stating that the update brings the October security patch for this device, the change log also mentions that this update brings a fix for a critical security flaw without actually going into too may details about the flaw itself, so make what you can of that. This update, software version A510FXXS3BPJ9, is gradually being rolled out across Europe but those who want to manually flash it can find the relevant download files in our firmware section.
