Su-33 Upgrades?

January’s issue of AFM has a small feature about renewed carrier ops on the Kuznetsov. One of the things they show is a picture of an aircraft described as a recently overhauled and upgraded Su-33, the work having been done at KnAAPO. The aircraft in question was Bort 88 Red. Anyone have any info on what upgrades the FLANKER-Ds received? R-77 capability? New radar? Anything else of interest?