Originally posted by KHATPHAT
i just sign into my regular ps3 and got notification that i needed to update to 4.81.here more info about the update
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Update features
System Software Update 4.81
An update to the PlayStation 3 system software was released on 1st November 2016. If you update your PS3 system, the system software version will be 4.81 and the following features will be updated. In order to download PS3 system software version 4.81, you will need a minimum 200MB of free space on either the PS3 Hard Disk Drive (System Update) or on removable storage media (PC Update).
DOWNLOAD UPDATE
Main features in system software update version 4.81
This system software update improves the quality of the system performance.
For those wondering i'm on 4.80 REBUG D-REX(DEX) and can still sign in so it appears this doesn't affect DEX users. I've added that bit of info to the original post. If anyone else can sign in post what CFW you're on and i'll add it as well