You're looking for information that most likely will never be revealed to the world (at least entirely). Add to this - it's irrelevant ...
As noted - the phone has been recalled - there were enough "findings" by those same smart engineers at that time to recommend and justify a recall totaling *billions* in impact to Samsung. What more proof do you need?
Can you state any of these findings? No. Absolutely not. No one can, obviously. Is it more plausable that, since the media was hyping these alleged explosions, and the Samsung gurus could not ascertain the cause of said explosions, that it made sense from a public relation and litigation standpoint to pull the plug on the Note 8 product and deal with the repercussions that may follow rather than deal with hundreds, if not thousands, of lawsuits?
This is clearly a situation of wagging the dog. Samsung couldn't ascertain why they were exploding, but rather than spend months in heavy research, they decided to give into the media and end it.
There is still no proof, as far as myself and many others are concerned, that the Note 7 is a flawed product. Why are they apologizing? Because from a public relations standpoint, they have to. They can't recall the product and say "this is completely safe, BUT, we recalled it". They need to accept, from a PR and litigation standpoint, that the product is flawed and that consumers MUST turn it in.
Any findings as to the root cause will most likely only be shared with CPSC and other agencies to allow Samsung the ability to release the S8 - and possibly/eventually the N8...
If said root cause even exists.
I'm not sure some truly see the bigger picture here...
Samsung is in a very precarious position and will need to now *prove* that they've truly found and successfully remediated this issue before another phone made by them is ever allowed back on US soil.
Which is why they're saying it's flawed and that it needs to be recalled.
The recent recall of the exploding batteries in their washers only exacerbates the situation, which is probably a driving reason to now push these updates to effectively (nicely) force those few remaining users holding to return them. It's not in Samsung's best interest to allow these devices to remain in the market.
Exploding batteries in their washers? More media hype, I assume. From Samsung's website: "The voluntary action was driven by reports highlighting the risk that the drums in these washers may lose balance, triggering excessive vibrations, resulting in the top separating from the washer. This can occur when a high-speed spin cycle is used for bedding, water-resistant or bulky items and presents an injury risk to consumers."
The washers have NOTHING to do with batteries, and nothing to do with the phones. They are completely separate entities, with the ONLY similarity of being marketed under the Samsung umbrella of products.