Not sure how reliable but allegedly related to the J-11BG.... can anyone summarise please?
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First pic: seems that J-11BG is indeed a thing but no interesting info other than the OP stating that J-11B (not BG) fought against J-10B last year (didn't mention outcome)
Second pic (which I think is the quoted picture in the first one): basically quotations from several Chinese official articles all inferring or stating that "a certain model of fighter (designed and produced by Shenyang)" has undergone upgrades in avionics and as a result has improved combat capabilities
Third pic: OP states that last year during Golden Helmet (AKA 金头盔)19U pervailed against other units flying J-10B (I dont think the above is related to J-11BG but I'll leave it here just for good measure); and that 1U (didn't specify what type of fighter they fly) are at a major disadvantage when fighting against 2U, which switched to J-11BG recently. He also stated that the J-11Bs with white radome (AKA J-11BG) have AESA radar and improved EW capabilities, and even went so far as to state that fighters with AESA radars and PL-15s (I strongly suspect that he's talking about J-11BG and perhaps J-16) have a shot at taking down a J-20, albeit with support from friendly units (other fighters, AWACS, ground radar, etc)