Did you read em? do tell us what they say?
Absolutely:
In the first link you posted from UPI : The article discusses India seeking russia to deploy brahmos... I suspect your calling card is the paragraph which suggest that russia experts holding the view that Brahmos is a downgraded Yakhont. Caveat being it doesn't mention the experts or gives any explanations of how a missile with better deployment platforms, same speed, same range, additional flight path and attack modes be a down graded system Essentially the rhetoric being masked behind unnamed experts...In the excitement of insulting Indian contributions you might have posted a self defeating source as YOUR SOURCE itself states the following
"The missile's target acquisition software, guidance, navigation and fire control systems are all Indian contributions to the JV, along with the firing mechanisms." thus repudiating you silly claims of "software change"
In the second link you have posted from russia&India report, if you would have cared to read, is the exact same content as the first one, but then again your keywords in google might explain that...
The third link that you posted from aus power, was indeed a good read not just about yakhont and other rusian munition and I would thank you for that. In the Yakhont section due to vintage of the article strongly supports my view of the Indian contribution in the system (which on the first link inadvertently was corroborated by you) as the article claims the following:
"Indian promotional materials indicate guidance improvements to the Brahmos over the original design, and the intent to deploy shipboard, mobile coastal defence and air delivered variants. There has also been speculation about a land attack or dual role variant, requiring a more accurate midcourse navigation system"
As land attack, Submarine launched versions were launched, it absolutely confirms Karlo Kopps rhetoric that Brahmos today has better and more accurate navigation system than the Yakhont or the Bastion P.
Your fourth link is to specs of Yakhont which has not been contested, refuted or claimed otherwise by anyone on the forum till date.
Your Fifth link provide splended information on chinese munition which again has not been refuted or contested, and was a treat to read.
As i said before my stance remains same, but none of your ill researched links provide any confirmation of your suspicions of upgrades.
On the other hand I would have hoped you were right that, P800 oniks was such an advanced system which by just a software upgrade could achieve "SLCM and Land Attack modes" that would have been indeed revolutionary....
Feel free to correct me if I have missed any of the facts or content in your presented argument.
thanks!